Baby doesn’t want to drink only eat solids

my 8 month old been doing dat since month 6.. he all of a sudden only wanted spoon food.. i normally give him a bottle in the morning, i pack a stonefield yo baby organic yogurt, a little bowl of homemade pureed food ex.. rice, carrot n chicken and 2 happy baby organic snacks.. he goes to day care from 9 to 4.. when he gets home i give him some gerber cheetos.. he eats dem while playing.. only milk after 5pm.. he falls asleep at 8pm everynight.. but i change his diaper at 11pm n feed him milk w a little oatmeal.. that way he sleeps all night.. when i let him sleep w.o the 11pm diaper change or bottle.. he would soak his clothe w pee by 3am.. n also wake up for food