How do you find time to homeschool if you also work outside the home and your husband refuses to help because he also has a job?
I guess the answers to this are going to depend upon the age of the children and their own self starting abilities or learning styles. Are you doing anything online where you just need to supervise? Also what are your work hours, commitments and flexibility for working like? can the husband step up and do we sports and library visits and other social connections on the weekends while you catch up on work so that you’ve got the flexibility during the week to manage some of the other schooling? Is there a local co-op that you can participate in? 
You don’t unless someone can be with the kids, either one of you or someone qualified to oversee it all.