In my experience dogs who are kibble fed drink way more than dogs that get homecooked or raw diet. Quite frankly the homecooked/raw has a lot of natural water content in it.
You were feeding him a far % of homecooked beef, so his water needs would have been much less than if he was just on kibble.
If you took the beef away of course he doesn't want his kibble. Any self respecting dog loves real BEEF
Wheres Dat Beef?
If you want to go back to kibble fully do some beef au jus and pour over the kibble - and good luck with that I do so hope it works.
\I am currently in my struggle to keep my puppy on kibble and my rescue on kibble until my puppy is hopefully closer to one year old, and my rescue goes through his eye surgery. This is because my other two are fed home cooked, and the smell is quite enticing, and now my puppy is trying to push my big boy out of the way to get to his food..... So we have some different feeding routines now. But TG she has not turned up her nose yet at her kibble as my other two did by 4 months old, at least she is 5mths old now and still eating her kibble.
Kibble from a quality manufacturer is very well balanced and I trust this for puppy rearing. Most important for bone growth and development.