How to increase "fatty milk" breastfeeding?

I am 4 weeks postpartum and I’ve been breastfeeding since day 1. I have noticed my breast milk getting more white and watery than the usual yellowish color. I’ve done some research and found out I’m not getting enough “hindmilk” from my breast milk. Meaning I’m not getting enough calories/fats to produce the nutrients my daughter needs. She is staying hydrated and energized off the watery white milk I am producing called “foremilk”. but she is filling up on that before she’s able to get to whatever fatty milk I may have, causing her to be fuzzy, hungry more often which is causing a belly ache. Has anyone experienced this before, if so any tips or tricks to help this mama out?!