Questions on sleep training

First time mom here! My daughter is 3 months old and is going through the 4 month sleep regression a little early! She turns 4 months on February 9th.

I really want to start sleeping training at 4 months, did anyone else start at 4 months?? Shes been sleeping with me but once I start sleep training she will be in her crib in her room.

I’ve seen different methods like Ferber, TCB, and PLS and Cry it out. What do y’all recommend??

And what do I do if my baby wakes up in the middle of the night? Do I let her cry it out? She doesn’t do night feedings anymore.

Ugh, anxious mom over here!!😅