It's nice to be able to say I'm too young to have experienced, rationing.

It was all over by the time I was born, but our house still stuck with a lot of the practices learned during that time. Dad was stationed up here, at Kinloss, for a while and we stayed with my Gran in a house round the corner from where I now live. I can see what used to be her back garden from mine.
One trick was using cheaper cuts of meat and slow cooking them. There was a cut of beef, can't recall which one, but she used it with veggies to make soup and then served it as the main dish. Next day, more soup and Stovies made with the remains. If there was any left it was sandwiches for tea. The carcase of Sunday's roast chicken was used for more soup.
Growing our own veg, we had the garden at my Gran's house and an allotment as well. What we didn't grow, one of the neighbours probably had so there was a lot of swapping done. According to my mum, we were better off up here - it's still pretty rural even if it does call itself a city now - than many having access to things a lot of city dwellers couldn't get (and an earlier generation of poachers available to fill out the larder). I still go out every year picking things like brambles and hazelnuts from the local hedgerows, at least as much as I'm able. And chestnuts aren't just for playing William the Conkerer.
Oh, and unless I want a real wallow, I still only have 3" of water in the bath.
Good luck with your experiment. I'll look forward to seeing how it works out.