Feeding at night

Hi mga mommies! I have 2 1/2 months na baby and bottle feed xa, should I wake her up during the night for a feed or hayaan ko lang siya matulog? Kasi i tried waking her up but fussy siya ayaw dumede, minsan nman okay lang. Worried lang ako baka kasi magutom si baby. Is it really necessary to wake her up to feed given her age? Please enlighten me. ?