Detached from my pet

So when i was pregnant (& even before then) my dog was everything! Like constantly snuggled with her, pictures of her, always taking her with me. After a bit of an extended stay in the hospital after giving birth (due to developing postpartum preeclampsia) me & baby came home & the initial introduction of dog & baby was good. After that I’ve been completely detached from her. Baby has all my time, love, attention, etc. like i really don’t know how to fit in the needs of my dog & her constant longing for rubs & affection & care for my baby as well. Not only that, she’s constantly licking & jumping all over. So I’ve been having to put her in the cage more when we’re downstairs. My husband still gives her a bit of attention, but it’s decreased a lot from the usual. I thought it was something wrong, but my gym coach stopped by to see us & she told me honestly it was completely normal & not to feel guilty about it. Has this happened to anyone else?