I hate breast feeding

Breast feeding is a bitch!
It's painful when he's feeding and painful when their filling up. 
I'm trying to phase out breast feeding and going onto formula because my baby is quite sick post breast milk. But ohhhh the pain! I want it all to end and to have my bloody tits back! Though I will try breast feed overnight only. 
Any one have any advice on helping with phasing these feeds out?