@tayda_lenny - I see Tony has now responded.
My approach to helping basenjis with kidney issues covers everything in basenjis' lives - a base of healthy home management supporting a vet & owner team resolving specific medical issues. I've had around 200 basenji fosters from all kinds of breeding, from many different home environments and with many different health issues. Many issues (health and behavioral) that they have when they first arrive are improved just by changing the environment to suit what each individual needs (not always easy to figure out what is best for each). Anything I do medically ends up being more effective with less vetting effort or medication.
I do whatever I can to minimize stress, including heat stress. Our basenjis are not allowed to spend much time sun-bathing (or time under heavy covers, though I will cover them with light covers if it is too cool). Those with health issues spend just enough time out during the middle of the day to take care of potty business. Of course, in our house, everyone always has companions. While some may tolerate being alone and may have difficulty getting along with others initially, b's are pack animals. Being alone is stressful for most. For those that might have to be separated, I use music or tv to sub as companionship. Something with talking (in the middle of music or on tv) can make them feel like humans are around even if they aren't. The noise also helps to reduce stress by eliminating silence. Basenjis will listen for something exciting to break the silence - hunter listening for prey - so a constant drone of noise reduces the strain of anticipation. There is the stress of aging as well. Eyesight changes will affect some more than others. To help minimize the stress, particularly when traveling, making sure he is surrounded by familiar scents can help. Some folks think that DAP or some oils, like lavender, are soothing. CBD oil may also help. I am trying CBD oil for the first time on my senior miracle Fanconi b. He's not impressed with the taste based on the faces he makes, but he does seek it out, reminding me if I'm behind schedule. It is one of those things I'm trying because I've found nothing to suggest that it will hurt.
Basenjis share many cat-like characteristics. One most likely to be quietly harmful to them is the tendency to not drink enough. Vets now associate the large increase in cats with kidney disease to the major use of dry kibble as a cat's diet. They evolved to get a large portion of their needed moisture intake from their food, so they tend to not drink enough to make up for the lack of moisture in kibble. I have found basenjis to be the same way and have had many fosters who didn't drink enough, including many NON-Fanconi b's. One thing that I do for all of my guys is that I never feed dry kibble (if you can home-cook, that's great - with the number I have and considering some are fosters who may be adopted by someone who can't cook for them, kibble is my compromise). I always soak it in boiling hot water for at least 20 minutes, then make sure it is cool prior to feeding. 1:1 kibble:water generally makes the kibble moisture equivalent to cooked food; 1:2 ≈ raw food; 1:3 ≈ renal diet canned food. We are in the heat of the summer and I do have an aging pack, so everyone is getting at least a 1:2 kibble:water ratio. For those that I still worry about dehydrating, like my senior Fanconi b, I use a rabbit water bottle in addition to having multiple water dishes which are changed a few times a day. B's like to lick and can't stand 'stray' water, so the Lixit-like nipple slightly dripping water from the rabbit bottle encourages them to drink. A plastic bottle allows me to increase the watering rate by squeezing the bottle. It has been the perfect fix to a serious problem with my old Fanconi boy, helping me to avoid having to do sub-q fluids (which I do have on hand just in case). I have given my old guy sub-q fluids by myself when it was not critical so that I know what he will tolerate and how I can handle his future care needs. In case you haven't noticed, I am very concerned about sufficient water consumption...
As for food, I have so many b's needing help and under my care now that I haven't had time to go through specifics of what I'd need to switch to homemade diets. For now, I still rely on kibble, even for my old Fanconi b (though added sweet potato makes it more palatable for him). Once I could get him to eat normally (he arrived as an anorexic and had to learn how to be a 'normal' b...), he was on the same kibble as everyone else in our pack, Earthborn Holistic Meadow Feast (26% protein, 1%min phosphorus). His phosphorus level just shifted into the 'needs binder' range, so I have incorporated aluminum hydroxide and switched to a weight management formula (Wellness, 24% protein, 0.6%min phosphorus - I've noted renal formulas at 0.4%), noting the phosphorus level is almost as low as the renal formulated kibble. Unfortunately, we also need to address an elevated calcium level. We will run more bloodwork before deciding what else needs to be done for that (though he is, of course, getting no calcium supplement now and the kibble has a lower percentage than the previous kibble). I give my old guy a multivitamin once a week. He also requires a potassium supplement, which I administer four times a day. I give him a bicarb or two four times a day, but I use that with caution. Needs vary, depending on stress (heat or challenging activities) and hydration. He is close to anemic, so I'm giving him B vitamins with iron specifically formulated for dogs needing more health support. He's also on antibiotics now, not given with anything else. He is more sensitive to everything now, so I watch for changes throughout the day.
Bloodwork test results are just a snapshot of a very dynamic system. I appreciate the vets who want to treat the individual, not just the numbers. I've had many other b's who were much less sensitive than my old Fanconi boy (well, every other b has been less sensitive - this boy takes it all to a new level...). I've had senior non-Fanconi b's who, with all of the testing and interpretation now available, might have been diagnosed with kidney disease, though vet exams suggested no problems. I am very conscious, though, of hydration levels, adding more water to kibble if I'm even slightly concerned.