Baby sleep.. HELP


When my baby was 3 months old he used to sleep from 730pm straight to 4 or 5am waking up for a bottle and kept sleeping for 2 or 3 hours more. It was amazing. Now, he is almost 11 months and the last 2 months he wakes up to any small noise, 4 or 5 times a night, gets 2 or even 3 bottles. He sleeps in his room but doesnt calm until Im with him. I give him dinner (cause he is on solids now) before his 6onz bottle for bed, it has been very tired for me. Any idea, advice, suggestion? I am desperate