Feeding

my lo is turning 2mths in a weeks time. I'm worried she is not getting enough to drink. sometimes i feed her 130-150ml, depends on how much milk ive defrosted/store in fridge. her pee n poo seems enough. but sometimes she can sleep for 9hrs straight without milk. do i need to wake her to drink milk? sometimes at night i try to latch as well and she will usually latch about min 10mins in total for both breast. idk if I'm overfeeding or not feeding enough