Wow this is a tuf question and Im sure its one of a very few subjects which the EF would like to drill into...

TBH, I dont have much experience on this subject but one of my close friends is a single mom and she had to put her kid on boarding school. That leads to the discussion of how much you are worth?

If you are not able to earn enough to afford child care or to the maximum boarding school then all you have left with is your innovation and creativity of using your skills in other areas... Think about areas where you can work from home and gain money at the same time look after your kid...

With the internet, anything is possible. List down the things you can do or capable enough of doing even if you havent done it before and look for jobs which may suit you....