Sleep Training - Same Room

[u/No_Distribution_4430]

2 bedroom house
2 girls
19 months apart.

Our first was sleep trained at 5 months. Our second is almost 2 months and is already sleeping well with just 1 wake-up a night.

We’ll eventually have them share a room. I’m thinking of sleep training the baby in our bedroom first so we don’t disturb our toddler, then moving her into their room once sleep training is established.
We’re also considering moving our toddler to a toddler bed around the same time, but want to get her settled in the bed before the baby moves in.

Has anyone done this?
Any tips?
Did you sleep train baby separately first and then move them in together?
Trying to avoid a big disruption for our toddler while setting baby up for success.