Planning on formula feeding & just need some encouragement

I’m 36 weeks today, with our baby girl. I will be on maternity leave for 8 weeks & will be continuing to homeschool my 9 year old daughter while on leave. Then I’ll be returning to work. I work 10 hour shifts at a job that doesn’t allow for pumping breaks, so I’ve decided formula will work best for us. I know breast milk is the healthiest, & some say maybe I could make it work somehow, but I want to be able to be mentally present for my 9 year old & enjoy my baby without stressing & I also want my baby settled on a formula that works for her & be dried up before I go back to work. I know I’m only trying to do whats best for us, but I cant help but feel guilty.