3 month old not wanting to eat in the morning?!

so I'm getting pretty frustrated with my son not wanting to eat enough during the day but always being like starving at night. so last night I fed him at midnight and then I fed him at 4:00am and he ate 3/ 4 ounces very quickly and won't go back to sleep after a second feed he's not crying in his bassinet he's just making lots of noises. now its 8:30 4 hours later and he barely wants an ounce I have to keep offering the bottle this is happened last 3 days in a row. I can't get him to eat enough during the day because this late start we're having. usually once a day I can get him to have a nice 6 oz bottle but A lot of times he just wants three.... I try to get him to have at least 4 ounces at each feeding. I desperately need sleep. he is swatting the bottle out of his mouth after reach 3 sips. he should be hungry now. I was originally trying to get him to eat by 7:30 a.m. but that really wasn't working so now I try to do a later time today.