LO sweating but no fever...hasn’t slept for 8 hours

My 6 week old has been going through a phase where all of a sudden she just doesn’t nap during the day. She falls asleep and wakes up soon after. I’ve been only able to get one solid nap out of her each day.

Today, she’s only slept maybe 10 minutes in the last 8 hours. Fell asleep, but woke up soon after. And she’s sweating like mad, even though I’ve only got her in a cotton sleeper (usually she sleeps in a sleeper and a swaddle). I’ve checked her temperature, but it’s normal...Any ideas...? Should I be worried...?