Extra sleepy some days?

My baby (7 weeks) occasionally has days where she ends up taking 3 hour naps and multiple shorter naps too, in addition to sleeping her normal longer stretches at night

I’ve been working with a lactation consultant and every time we try to increase breastfeeding and decrease supplemental breast milk bottles, I notice more sleeping but it’s possible I’m just hyper alert because I’m afraid she’s not getting enough milk.

Is it normal for babies to have some extra sleepy days ??

If she wasn’t getting enough milk for one or two days due to increased breastfeeding (transfer issues) would it make her sleep more ?