Soooo Edith is 3 weeks as of yesterday. Now, she would've probably slept through the whole night…

Soooo Edith is 3 weeks as of yesterday. Now, she would've probably slept through the whole night (asleep by 10) but I woke her up to feed her because I didn't want her to miss a feeding. Is it okay to let her sleep the entire night next time at this age? She's been well over her birth weight since week 1. I plan on asking her ped but it's 4 am and I'm curious if I was not smart for taking the time to sleep lol