Do you give a dummy to help sooth? My biggest advice would be to take it away if you are. It's biologically normal (and can be exhausting for us) for them to use us as their pacifier. Babe will take in a little when flutter sucking too. At 2 weeks, your body should still be on oversupply mode.
I would listen for swallows! If you aren’t hearing it there is a change she is having a hard time drawing milk out
Pay attention to swallows instead of suckles. If she isn’t swallowing she isn’t taking anything in. There is a sound with swallowing but not always. You can look at yourself in the mirror and swallow to see what to look out for visually.