Is this something that is expected?

The last week has been pretty awful. The longest stretch my lo slept was 3 hours at night and then throughout the night it would be an hour at most and during the day, anywhere from 20 mins to an hour like 5 times a day. She was crankier than usual and every night would have a crying fit. Thankfully the longest it lasted was an hour the one night. I Hate seeing her so upset and Anything I do doesn’t help🙁 last night she didn’t end up going to sleep until 3am and then she slept the most she has all week. A 5 hour stretch and then a 3 1/2 hour stretch! And she’s been mostly sleeping since then! She’s been up about 3 hours total between 1130 until 8. The only thing worrying me is she hasn’t eaten as much today as she usually has. Typically she eats 4 oz every feed but today the most i could get her to eat a time was 3 and the least was an oz. she has no fever, no sign of any kind of sickness, shes not lethargic, and she’s had 6 wet diapers today so far so although she’s not drinking as much, she’s still peeing her usual amount (I don’t understand that but I’ve been told that’s a good indicator that means she’s not dehydrated). When she has been awake she’s been happy for the most part! I know around 8 weeks babies go through a big mental development and she’s definitely had a growth spurt! Could today just mean this “leap” has ended?