does not having a post workout meal reduce hypertrophy compared to eating something after workout?

I train at 9pm to 11pm , go to absolute failure on every set, but 2 sets with 5 - 10 rep range for every exercise

but i live in a dorm so the window when the canteen is open is only till 930, and i am busy earlier in the day, how do i maximise growth and recovery? cant afford to get meat everyday , but have protein powder and oats