3 1/2 month growth spurt?!

Seems like since my little lady turned 3 months she’s been more fussy, harder to get to sleep, and wakes up more often in the middle of the night! I’ve read a lot online about a 3-4 month regression or growth spurt! I never had this with my first she slept amazing since six weeks old. This one is a different story!

What is some advice or tips for getting through this or what to do when she constantly keeps waking up and when I come in she smiles and wants to be held. She doesn’t seem hungry just wants to hang out! I’ve read hold them I’ve read let them cry it out. I don’t mind holding her I just don’t want all of our progress going out the window after this is over (she was sleeping through the night before this happened) I just started working again and this is perfect timing!!! I’ll take any advice you may have. Thanks!