Jack, you're missing an open goal.
It's horrific, but the reality right now is many parents may well have to feed their children over half term, with very little money or time to do so.
You have been pissing about with £20 shops for a few weeks, so here's an idea - do something helpful with the knowledge you have gained.
You can even use the opportunity to centre yourself - it's ok, because you will be helping others. You can talk about your experiences, and use that to actively help people, rather than just indulging your own ego and giving yourself insomnia.
Come clean about the £20 shops. Cost your meals accurately and tell people you have milk, juice and what-not delivered.
Tweet some of your lunch ideas, maybe even a recipe or two with links to your website. Start a hashtag. #Halftermlunchesforaquid or something. Caveat your help with a disclaimer this is not sustainable for the long term in any way, but it's an emergency measure to get people through the holidays.
Actually fucking DO SOMETHING other than howling and clawing and posting potatoes and selfies. Your followers will love it, they'll retweet the hell out of that shit, and you might even help people who are probably feeling very scared and very hopeless right now.
ETA: who am I kidding. You'll do fuck all as per usual.