Harsh as it may sound--Buck-up baby! You do need to Woman-up and take responsibility for educating your kids. Yea..I know the excuses, I know the burnout, I know the thankless job and the hours of work that no one really cares about, but you need to move beyond your own inertia. If you don't take on the task of educating your kids, who will?
I am sorry you are feeling down, but I have no sympathy, yet I can empathize. No, there are no easy ways out for the daily grind of homeschooling, work outside the home, and work around the home. What were you expecting? Kids with learning issues take extra work one-on-one. Can you make your kids a priority in your life? If you want to be doing something else, then fess up, admit that you are done and find the best alternative you can for your kids.
Look at the end game. Do you want your kids to graduate from high school? If they do graduate from high school, will they have enough skills to qualify for a minimum wage job? Are you handicapping them in the future by neglecting even the basics of their education now? If you have three years to get your struggling learner up to speed, get moving. Don't wallow. Don't compare. Your kids will respect your effort. They are watching your actions.