Transitioning away from cosleeping

We are going to start sleep training my 7 month old tomorrow

I’m trying to figure out how to do this.

Usually my 4 year old, baby, and I come into my bed and we lay down together to get them to sleep. I nurse baby to sleep, and once they’re asleep, get up and carry my 4 year old into her own bed, then lay back down with baby.

I love that part of our night laying in bed together while they fall asleep. We all do. So I am wondering if I can keep this part of the routine, we all lay in bed together (probably my daughter’s bed instead since they will be sharing a room once baby adjusts, and it’s the room baby is used to napping in).

Im thinking I’ll lay in bed with them (in their room now though), nurse baby while older daughter falls asleep, then transfer baby to her crib in the same room? How does that sound? She does a lot better transferring her to her crib for naps when she’s fully asleep rather than just sleepy btw, so we were going to do that for bedtime too

Or any suggestions? And again, while baby is adjusting to sleeping in a crib at night my older daughter will be sleeping elsewhere

Can anyone relate to this? Trying to keep our routine now as similar as it can with the adjustment.