I'm just writing to update that since the switch back, Benji is doing well again. Bile only once so far, and no mud-pies at all either. Now we're learning to deal with the snow, but that's a whole other story.
I'm still researching what new food to transition Benji over too, also he is only eating all his food late at night, none in the morning or during the day. Because of that pattern, I leave it out all day. If I really want him to eat twice a day, perhaps I should remove it at night all together to see if the next morning he manages to eat?
Getting him to eat 2 times a day shouldn't take too long for him to figure out what is happening.
Just put out the food in the morning. Remove the bowl after 30 minutes (or 15 like mentioned above, I used 30, so he gets some time to register the food). Then don't offer any food until the evening meal. Leave for 30 minutes, and remove.
He most likely will get pretty hungry the first day or 2. But don't worry. Basenjis are the "world best" actors in faking starvation. Also their stomachs are developed in such a way they can go for long periods without food. Actually I read an article saying Basenjis are one of the breeds that could get by on 1 meal a day…but it was still recommended to spilt the amount and feed 2 times, for digestion/health reasons.
I started a 2 times a day for Gizmo 2 weeks ago. His transition was more natural...he just stopped eating all his mid-day and evening meals, just left them half done. So I understood he didn't need 3 times a day anymore.