My first, when he was about 8mo old we finally just had to move him. He would move, it would wake my husband so he’d adjust himself and that would wake the baby. I put him in a pack n play next to the bed and he slept so much better. We were able to get him to start sleeping through the night and everyone could move as much as they wanted to. Every kid has been different and I really had to mix it up and try different things until we found what worked for each of them. We still have the littles with us, our second (18mo) isn’t every night though. I think he’s ready for his own floor bed.
I wish I could help, but my 18 month old is still breastfeeding and does not want to stop. The past couple months he’s waking up crying wanting milk like 3 times a night and I’m tired! I don’t mind breastfeeding to sleep but have no idea how to ween the night feeds. I tried once to not give in last night and it was the loudest crying I’ve heard… I’m not looking forward to it. If you have any luck, I would love to know how you do it!! Also bed-sharing!