Nights are now hell

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We went from having an amazing night schedule where she woke up at 3 to eat, and get a diaper change to absolute chaos.

It started when we transitioned from the swaddle to the sleeping sack 3 weeks ago, now she wakes up 3-4 times a night - not hungry, just wants to play and yell. I’m so exhausted.

Any suggestions on how to make it easier??