My husband and I (mid 40s) are both on ESA contribution - but aren't classed as low income due to this legacy benefit. We live with my parents which we did after losing our home together due to ill health and go halves on bills with them, no rent (one is on pip, the other their carer) and we are very limited on income (especially with increased price with energy etc).
We also have a 7 yr old son.
Will the only way we will be classed as low income will be through UC?
My husband works around 10 hours a week, no income but he does have royalties (around £20 a month at most, sometimes nothing at all). It's the sort of industry we hope he'll get a big break, but he is limited so we're not relaying on this (maybe we did when we were younger!) How does royalties work with UC?
Things which would really help would be free school meals, prescriptions etc (we currently pay monthly).
My concern is I am worried about the whole process and don't deal with stress well (which is why we have stayed like this a long time). But with cost of living, it's a must now - my health has deteriorated and I am also applying for PIP. How will this affect things with possible UC and low income?
Thank you

Edit to add: We also get child benefit but no tax credits etc.