Supplementing formula

taylor
Any of you moms out there supplement formula and breastfeed as well? I'm about 2 1/2 weeks in with breastfeeding and pumping and I have a small little supply of breastmilk built up. Daughter is currently going through a growth spurt so she's attached ALL DAY. I understand this is just because she is growing but it's honestly driving me insane and almost making me want to quit! But I know that breastmilk has amazing benefits for her and me so I don't wanna quit all together. Just curious to how others do with breastfeeding and formula supplementing. She's had some formula from the hospital and seemed to do well with it!