PP Period Question

Jamie • BLESSED! I love my God, my husband, my kids and my country. Life is good!
So, my son was delivered via C-section in October. This puts me at around 14 weeks PP. I started my period on December 25 at 2 1/2 months PP. I should have, by my previous cycles, started my period again yesterday or today. This is our 7th baby and I've had clockwork periods thru all postpartum times- even with my last which was also c-section. My question is (since I've never experienced it), is it normal for it to take a while for your cycle to return to clockwork status? Again, this is our 7th child and my first time experiencing this lol. Thanks in advance! (Photo for fun!)