I feel so stressed, frustrated and annoyed I don't know what to do. My fiance tells me I need manage…

I feel so stressed, frustrated and annoyed I don't know what to do. My fiance tells me I need manage my time better but with my 6 month old that I'm currently nursing I get nothing done. He want to be on top of me 24/7. I am also pumping so I am able to give him bottles but in not having any success and it's been 3 weeks now. I feel like just giving up nursing entirely. I feel so stressed.