More foremilk than hindmilk issues :/

Anyone else have the same problem or is it just me. Sometimes i mix my bottles cause my doc said it was okay to do. And it seems like my little girl is getting more sleep during the day, but at night she will maybe get anywhere from 1 to 2 hour stretches. She will maybe get 2 to 3 if i swaddle her. I try to seperate the foremilk from the hindmilk but i also get lazy at times and just leave it as is. I still try to breastfeed her from time to time but majority i pump. Any suggestions?