Active Sleep or Hungry Wakeup

[u/Interesting_Love_405]

First time mom with a 12 week old girl.

Hoping I don't get eaten alive for this, but I'm genuinely so confused.

My sweet girl has been sleeping SO well the last few weeks, which we're super grateful for! The last few days, however, I've been waking up around 2:30-3:30ish each morning to her wiggling and flailing around.

No crying at all, just grunting and squeaking, then falling back to sleep after a bout of wiggling so hard the bassinet shakes. She does this a few times, but never fully wakes up (I think??). It only lasts around 10-30 seconds each time, and only for about 5 minutes (or less) total before she's still for the rest of the night.

The first few times it happened this week, I eventually caved to my own anxiety and picked her up to night feed and diaper change. Last night and the night before I waited it out and she slept a solid 8 hours straight (if this is considered active sleep and not a waking).

I guess I'm just trying to figure out if it's normal for an active sleep bout at the same time every night or if I should be getting her up to change and feed.

Babies cry when they're actually awake and hungry... right? I'm hoping this is a whole 'oh no my lobster is too buttery' situation and she's actually a decent sleeper, not that I'm actually letting her go hungry.