Breast is best?? Opinions

Me and my boyfriend have been debating all day over if I decide to supplement with formula he thinks I should just stop breastfeeding all together... I have made it a month EFB and he has never lost any weight so it’s not a supply issue he just has such a huge appetite... he will literally down 6 ounces (pumped bm) and still be hungry. I’m thinking that within a few weeks I may need to start adding a bottle or two a day of formal my bf said to stop breastfeeding at that point

My opinion is even just one ounce of breast milk a day is so much better then none at all ... what are your thoughts