My LO will be 12 weeks this Friday and I've heard the 12 week growth spurt is a tough one...those have gone through this do you agree? What was your experience? Advice? Just prepping myself mentally

. Especially since I go back to work Tuesday. Thanks!
Re: 12 week growth spurt...
BFP #1 12/02/11, M/C 12/08/11
BFP #2 04/06/12, DD born 12/20/12
BFP #3 06/09/14, M/C 06/15/14