If he can take water from a sippy cup he should be off bottles at least in the daytime too. It takes more effort to drink from the cup than the bottle.

He probably gets a bottle of milk at home when he wakes up - so of course doesn't need breakfast then has another one at snack/nap. He should be given some dry cereal like cheerios and a sippy of 4 oz of milk before his nap. And offered the other 4 oz in a cup when he wakes up. At lunch he gets just the sippy of water and some food - no puree cause he is going to smear it since he has no idea what to do with it if he is fed at home. If he isn't eating table foods you will have to feed him if you don't want the mess. The other bottle should be used 4 oz after lunch and other 4 oz when he wakes up and the extra 4 oz sent not used unless there is a late pick up.

When the amount of milk he is given at a time is reduced he should start to eat more.