Transitioning 22 month old to Toddler room

My son will be 2 in May and will have a baby sister (1 month old) she’s due in April.

Right now he’s been sleeping peacefully for 12 hours a night in his crib in his own room since 12 months old. So part of me wants to keep it that way until he’s 2.5-3. I’ve heard transitioning him too early can be bad as well and doing it around the birth of a new baby is a bad idea. But the other part of me thinks he would love the independence. I redid his room not long ago and he loved it. It helped him sleep better honestly. He loved his wind down routine and going to bed. So I’m wondering if anyone’s made the transition yet and if so how did it go and what’s your child’s sleeping situation? Mattress on the floor? Toddler bed? Any input is welcome.