My 7 months old baby does not sleep well at night. He wakes up at every one hour, wants to be fed and after feeding goes to sleep but wakes up again after an hour. This goes on whole night. Sometimes he wakes up two three times in an hour. This has been going on since he was 3/ 4 months old. Earlier I thought it was because of hunger. But he is on solid now. Can anyone suggest me a solution to this problem ?