Feeling like a failure

I have been exclusively pumping for my daughter due to a severe lip tie. I am most definitely not an over supplier so i work very hard and take so many supplements just to barely make enough for her to eat. I go back to work in 2 weeks and i have nothing stashed away for when she begins daycare due to not making anything additional to what shes eating. I pump every 3 hours! Im doing all the right things and still, nothing. Would it be horrible of me to supplement 2 of her bottles with formula? My whole pregnancy I just knew i was going to have a successful BF journey since this was my second child. But then we found her lip tie. So EP was my answer. Now, im not producing more than she eats. I just feel like i needed to vent, i never wanted to have to supplement. 😢