Hi
I bf exclusively for 6 months and then tailed it down (along with some formula feeds) over time to morning and evening and then eventually just once every few days if dd needed comfort until I eventually stopped when she was 17 months.
I can remember in the early months feeling really fed up. The inital pain, the incessant feeding during growth spurts, the throwing up of milk and having to start again, the tiredness. Nothing out of the ordinary. Sometimes feeling claustrophobia. I did want to do it and it did work reasonably ok physically but it did feel like work with the occasional lovely, peaceful, cuddly feeling.
I agree with Starlight that it doesn't have to be totally either/or. You are probably through the worst of it by now. Once a baby starts eating solids, it needs less milk and the feeds generally become less frequent. It does get a lot easier.
Do what you feel you can, what is right for you, and don't feel bad. Maybe tail down to one feed a day (in the evening) and the rest formula. I understand that there are babies that will not take a bottle, my cousin's dd refused for over a week, but it did work in the end - it's just an adjustment for them.