Here is a link to the Facebook Event: https://www.facebook.com/events/359744554994753/
Join the Facebook group "Orange County (CA) Basenji Meet Ups" https://www.facebook.com/groups/942444349188499/
They are trying to set up meetups at least once a month. With the COVID-19 virus meetups were on hiatus but now that some dog parks are opening up meetups for Basenjis are starting up again. I live in San Diego so I really have to think about driving 1.5 hours with 2 senior Basenjis.
This little girl may not fit your criteria but she is not horribly far from you in Arizona, at TarSha Basenjis.
In back issues of the Basenji Magazine there is a series of articles by Jeff Schettler about training his Basenjis to track and hunt. I have no idea if Jeff still has or trains Basenjis but you can do an internet search "Jeff Schettler Basenji" which will bring up a bunch of links. Jeff has a web site as well as a Facebook page.
@malti35 Have your vet send the blood draw to Dr. Dodds at Hemopet. Very few, if any, veterinary labs run a complete analysis especially for thyroid issues. Dr. Dodds has been tracking certain breeds health issues for years, Basenjis being one of them. You will find the forms and other information at: http://www.hemopet.org/
I changed vets because, even though his in-house lab did not have the capabilities to run a complete thyroid analysis, he refused to allow me to send a blood draw to Dr. Dodds. Good luck.
I am sure that you are praising him but probably not in a way that gets his attention. I had to house train a 6.5 year old Basenji. It only took 2-3 weeks but I had to make a complete fool of myself praising him loudly and effusively. My neighbors were a little concerned about my seemingly erratic and lunatic like behavior while walking Valentino BUT he was trained quickly and completely. During those 3 weeks there were accidents in the house but I just ignored him, cleaned it up, then took him on a walk and behaved like a lunatic with compliments when he peed.
Engage a behaviorist, someone with qualifications who will work with you to help you change how you deal with Blu. Blu has had a lot of changes in a very short period of time and you are expecting a lot from him. If he never had much experience with small children he may be trying to nip her out of fear. Children are unpredictable, make quick movements, and are loud. Blu likely is terrified. As stated above, neutering will not change his behaviors.
Regarding Thyroid Testing:
Everyone recommends Dr. Jean Dodds at Hemopet for complete panel Thyroid testing. Most vets and labs do not do a full thyroid panel test but Dr. Dodds Hemopet lab does. You need to have or find a veterinarian who will agree to allow you to send a blood draw to Hemopet. I ended up changing vets over this. First vet told me it was his lab (in house) or nothing. Second vet said "No problem." He even gave me a styrofoam lined box to mail the blood draw in. I had a very fat foster Basenji and needed to know if it was his thyroid (it wasn't) causing him to be so obese.
Go to www.hemopet.org and read about what you need to do to get the testing done.