But you get free childcare when they are certain ages. You'll need to take the bull by the horns here and look into all the things I mention.
Find out what childcare is available from gov. Enrol and use.
Fiver, Upwork - sell your PA and secretarial skills there. Here's how to make the best profile, and go from here with other videos, this guy is good
Make a LinkedIn profile and a few CVs, here are some ideas of gigs you can find from home:
minute-taking
transcription
live notetaking
copy writing
I'm assuming you have excellent English and if you don't, revise and bring them up to scratch.
Your linkedin and gig profiles can potentially get you enough work to live on alongside UC if you're single and alongside hubby's wage if not.
I do under the tax threshold and share my code with him to reduce his tax so as a family we earn the max.
Since you have free time spend it making top notch profiles and get your skills ready to sell, then go and earn money.