Breastfeeding after formula feeding?

My LO is now 3.5 months old, and we’ve been formula feeding from the start, and I have regretted it ever since. We have a great routine down now, and she loves her bottles, so I’m a little worried that if I were to try to start breastfeeding her, it would just be hard on the both of us.

Is it worth it? My husband is very supportive of whatever decision I choose to make, but I’ve been going back and forth for months on what to do.. any advice would be helpful!