fussy baby

hey guys. so my 11 month old has always been a fussy baby. We have always had to co sleep, He has never slept through the night. The only way I can get him to sleep is breastfeeding him and rocking him at the same time. He still wakes alpt during the night. sometimes won't go back to sleep for and hour or 2. Lately he has been biting me slot during feed time. usually when he's over tired but I have had enough I can't take it anymore. I want to try get him on the bottle but he doesn't want a bar of it 😩😩. I know persistence is the key but I am also worried about how I am going to get him to sleep as nursing is his comfort/ falling to sleep thing. any advice from you lovely ladies?