Be the man, I don't want to do it anymore...

So, I have been with my husband for 3yrs, but married for 1.5yrs. He was not taught anything by his mom. I have taught him everything from how to dust to how to hold down a full time job (he worked part time, seasonal for 13 years). He is the sweetest guy I've met in my life. My question is how do I get him to be the man. I'm the one that fixes everything in the house. I wash the car and do yard work on top of a full time job. I was recently diagnosed with exaggerated lordosis which is a form of scoliosis. my spine has a large forward facing curve in the lower lumbar. I'm having so much pain and a pinched nerve. I'm on a LOA from my job. How do I get my nerdy, sweet, irritating, man child gamer of a husband to step up and be the man, I can't do it any more. He did not have a dad growing up so was never shown how to be the head of a household. please help