My baby is turning 9 months and he cries badly and wakes up at least 6-9 times in night from the last 20 days. Earlier the frequency was 2-3 times only. He does not calm down even with feed, when we wakes him up then he looks fine. We need to struggle to make him asleep every time he wakes up. I don't think so he is colic.

no it is definitely not colic, as colic usually starts around the 2nd month and is over by the 4th or 5th month. i think your baby is getting tired and also more independent. plus it is also possible that baby is getting hungry and hence wakes up. make sure there is not a big gap between the last meal or feed and bedtime. also, avoid playing when your baby wakes up in the middle of the night. instead keep tapping, or let your baby play alone sitting on the bed next to you, even as you lie down and quietly keep a watch. don't entertain baby at night, and slowly he will fall into a sleep pattern.