Seems like we are going backwards

Estelle • 2nd time around very excited
Here lately I feel like my baby girl is going backwards some days it seems like she can't find my nipple and it's like she doesn't remember where it's at and she will start getting upset and like moving around like crazy and then when she does find it she sucks as if she is mad and will start the moving again it's like she trying to swim on my chest lol I burp her but she still does this I don't know what's going on she has plenty of wet and dirty diapers any one know what could this mean