Not about a wedding, but my relationship

Traci • Two boys 3 & 5. Married on 1/1/16. Had our miscarriage 12/11/15 and we are praying for a sticky baby!
My man and I are getting married in June. He is building our house and is scheduled to be done April may-ish. I have two sons already and he works as a general contractor and I am a legal auditor for a collection agency. 
I. Hate. My. Job. I am desperately working my hardest to move through real estate school so I can quit. 
He said I can quit my job when I get my license.
It's nearly impossible. 
I work full time typical 8-5 weekdays, come home cook dinner clean house kids bath and bed and by that time (as you all know) I'm exhausted. I am doing wedding stuff constantly too. 
I am just so frustrated that he won't allow me to quit my job to finish school within 2 months or so. I feel like it's not going to get done. 
I complain to him EVERY DAY that I hate my job and he just blows it off. 
I don't know what to do or how to come up with the energy to do this. Am I taking too much on and wait until wedding/house is built or she I make it work to be where I want to be?