Until recently I was only able to feed to sleep. When I decided I wanted to stop this I gently woke my baby up after the feed. We then brush teeth, read a book, and then turn the lights off and have a cuddle. I then put her in the cot with a cuddly toy. This is working well, and means I can share bedtime with my partner (he often takes over after the feed).
If you know what time he's due to go to sleep then feed him earlier, rather than as he's due to sleep. So I know my baby goes to sleep between 7/7:30 normally so I make sure he's fed by half 6 ish Then once he's done feeding, do quiet time, get in cot, read a story, make it dark, sit with him. I stroke his hair and tummy sometimes to help him get dozy then can leave the room. He also has a comforter teddy. It took some time for this to be successful but we got there and some nights now I can just put him down and leave the room, slowly getting there 🥰
Couple of things we did, we started with the bedtime he was most sleepy which for was first nap and started to try and settle him for that nap first with the boob. Put a comforter in your pjs one night so it smells like you and then when you’re feeding stroke their cheek with it and then when you put them down give them the comforter (you can take it off them when asleep if you’re concerned). Make sure they’ve fed lots but earlier in the wake window so it’s not nap/bedtime when they feed. At nap/bedtime you could do the pick up put down method if you want to cut all sleep associations or use a different sleep association (rocking patting sushing) and then gradually phase that out. Good luck
My advice would be to get dad to do put downs with a bottle for some nights, around a week or 2 and that will get him out of the habit