I hated it the first 8 weeks. I couldn't get it to stop hurting no matter what position I tried, tongue tie getting snipped, etc.. He fed every two hours and it all just felt exhausting and relentless. Every day I said I'd quit but like you just kept going. I'd say I'm just going finish the week, make it to three months, etc.. Then around 8 weeks it just got a lot easier. I still find it hard sometimes, like during growth spurts, but for me, I think formula feeding would be harder. At least right now when he wakes to eat I just pop him on and we're both back to sleep within 20 mins. If I had to get a bottle ready in the middle of the night I think it'd be such a pain.
Do what's best for you though, if you want to stop then do--it's f*cking hard sometimes!
Is the bednest still helping?