4m sleep regression

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So my sweet little baby that once was sleeping through the night is now waking 2x..

I know it’s a sleep regression, bc even her naps have shortened but my question is does it go back to normal?! I just don’t want to start any bad habits by going in there as soon as she wakes and starts crying.

I have a 3.5yo that’s room is right next to hers, so I can’t let her cry for too long to soothe herself back to sleep.