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.

at 9 months your baby is probably at a huge development and growth phase, and is also moving around a lot. it is possible that your baby gets really tired, and is extra hungry too. try bringing down meal time to just a little before bedtime, so that your baby is happily full. also, make sure that your baby sleeps on time and is not over-exerted by the time he finally falls asleep. massage his legs and hands each day, as well as his back and shoulders. give him a nice warm bath before bed to calm him down. if he still wakes up in the middle of the night, try and calm him down to sleep, instead of getting up and playing or talking too much.