salaam aleikum brother and sister.

I am a plumber, full time. some of my works entail hard or strenuous power, how do I do both cus I had to break a fast last year at the middle of a work, I couldn't continue, my body was breaking down.
I made it a point not to work at all in Ramadan. in fact I have done that three years in a roll, manage whatever I had saved before Ramadan. only worked twice last year due to finance which I had to break one of it....it brought me some personal pain and shame. how do I fast and hustle at the same time cus this year....enu gbe gidi gan or is there way to postpone day I wanna work