Exclusive pumping, Stopped for about a week now.

Bianca • I'm 19, married & raising two girls👨‍👩‍👧‍👧 Genesis🦄 DD: July 24, 2014 Actual birthday: July 27, 2014 & Leilani🦋 DD: June 22, 2017 Actual birthday: June 10, 2017

I stopped pumping and just started giving my 2 month old formula because I thought giving her the formula & breastmilk was messing with her stomach & making her strain a lot. I haven't pumped in at least a week now, will my supply be the same any tips?