Leap 3 ? Has anyone deal with that?

Nikky

My baby turn 12 week old today and since last week until now she got fussier and she will cry like crazy at the middle of her nap or sleep. Before she can sleep through the night without waking up or need me to rock her back to sleep. Now I have to do that when she cry in middle of her sleep. Pacifier and white noise use to calm her and ger her back to sleep.

Has anyone going througb the same thing? How do you make it work better ?