Are you in the UK? Will your son qualify for 30 hours free childcare next year?
Go on the govt web site and find out what benefits you can claim in terms of free childcare and also tax relief on childcare. And when.
Then look at your skills. What extra qualification could you get that would increase your earnings potential? You could use this time at home to do another college course. Most colleges have crèches and if you have a very low income, you would probably qualify. And it would get you out more, which might help.