Stopping breastfeeding early

Did any of you other mamas feel bad about not giving your baby breast milk as long as you had planned? I exclusively pumped until my lo was 3 months, wanted and I do it at least 6-12, then I started the pill which my OB didn’t inform me would pretty much dry it up. Switching her to formula has just given me the worst feeling of guilt, and like I’m a bad mom, even tho I tried all different things to increase milk including stopping the pill and pumping more. I know I tried but still feel terrible.