Don't know what to do

Will she contact nap? Really normal for babies to want to sleep close to us and wake when put down

Is she definitely hungry? 6oz is a massive amount of milk for such a young baby. It’s possible it’s giving her a tummy ache. Hungry baby formula is also harder for them to digest so a good chance that’s also causing her immature tummy some issues.. what made you use it to begin with? Are bottles pace fed?

Just colic probably mines the same

Babies cry and don’t sleep.
Not even 3 weeks ago she was all cosy inside of you in the most perfect environment. They want to be on you all the time to feel safe. She might have wind. She could be overstimulated so many things. But she’s probably crying because she wants you. Try some skin to skin in a darkened room with some white noise

When my oldest was little he went through this, I popped him in a sling for most of the day and he got some sleep, after getting him well rested and not over stimulated he was far easier to settle in his bassinet at night. For babies this young, sleep results in more sleep. 🥰 Hope it may help! Fatigue can make everything seem worse.