Parenting

Second time mom with a 5 week old. I am one who is mindful of nap lengths, wake windows, and aiming towards a schedule once age appropriate. I understand 5 weeks is way too young and to just follow cues. However, my baby is seeming to gravitate towards a schedule but there is a bit of a blip.

Baby wakes between 7:30 - 8:00 am, stays awake for 1 - 1.5 hours each window, takes naps for 45 min - 2 hrs until mid afternoon. She then fights that last nap and doesn't take it, and ends up going to bed at 8:00, sleeping 12 hours. I've read babies this age don't sleep 12 hours overnight (2 feeds still) and she is awake from like 4:00 to 8:00 pm which is way too long for a 5 week old. The last window is cranky and she is clearly tired but just refuses.

Any advice??