6 week old... Is he having enough formula

[OurJourney]

Hey, I was breastfeeding my little boy for the first 4 weeks and he just wasn't getting enough and he was constantly on the breast. so I decided to put him on formula. He started on 4 oz and I have now upped it to 5 oz he is finishing the bottle in just over 5 mins!!
Should I up his feed?
If anyone can give any advice on this topic that would be great
Thanks

[LST]

I'd up it. My 4wo is currently guzzling 6 oz every 2-3 hours. It does take him a little longer than 5 minutes though..

Congratulations

[JiltedJohnsJulie]

Just feed on demand as you would for a bf baby. The guidelines on the carton are just that, a rough guide.

[NoIamAngelaHernandez]

Constantly on the breast is normal for a newborn.