My DS is 5 mo. He was a ravenous milk drinker having 5 x 6-8 Oz bottles a day. Gaining weight along his birth line of 75th centile. Suddenly in the last week he has starting taking half this. He will only have 4 bottles. 1 he might drink it all, the other 3 he gets about halfway then starts crying and won't take any more. He is taking miniscule amounts of first tastes once a day as solids- tiny amounts that won't be halfing his milk. Any experience or ideas? What can I do?