Feeding

My daughter turned 1 month on Thursday. I formula feed. She seems to be eating 4-6 oz’s a feeding which is every 3-4 hours normally. She doesn’t eat it all at once. Normally just 4oz but then she’s hungry anywhere from 30 min to an hour later and will drink another 2. Is that normal? I don’t want to starve her but I don’t want to feed her too much either.