Formula at 7 weeks old

How many ounces are you feeding your 7 week olds or older? We started off feeding our baby 2/3 ounces every 2 hours or so and it was working, but the last few days our baby has been super fussy and eating more often so we decided today to try giving him 4 ounces per feeding. I feel like 4 ounces Is a lot because he spits up but at the same time he’s not denying the formula and he’s guzzling it down. Is it normal for them to be eating 4 ounces or more per feeding at this age?