Some will, some I was doing before the crisis, but others I will let slide.
I had an allotment for 5 years that I let go in January, as I was too stressed not getting to it (20 min drive and then 15 min walk carrying all my tools) and not getting enough time meant it was getting overgrown too easily. But having HAD the allotment means I am a lot better at growing veg and have learned a lot more about how to squeeze more into my pocket hankerchief garden. So I will be continuing growing at least some veg myself. (But I do miss the loads of fresh raspberries and making my own blackcurrant jam).
I am also really lucky that I am not in the depths, there are many people a lot worse off than me - but we've recently had another round of paycuts so I am having to remember some of the lessons I learned before and put them back into practise.
We have freesat on the tv rather than a satellite package, so it only costs us the tv licence yearly (and even if I gave that up, there are plans to make all households pay regardless of tv in the next couple of years here).
I still buy quality clothes as I need to be well dressed, but I tend to buy fewer of them and make sure they are really perfect now, and look at the end of the sales in the high end stores (70% off a really good classic suit like Jaegar means it's the same price as a regular Next or M&S suit and I'll get WAY more wear out of it). I get my old shoes re-heeled and re-soled as needed, which is a lot cheaper than buying a new pair. And I also tend to look for new shoes in the high end sales again as much as possible as the quality of those lasts better.
I am getting back to more cooking from scratch (I like it and used to do a lot more but longer working hours and dealing with DD SN's and DH working overseas 50% of the time, meant I had dropped back). I always did double batches of dinners to freeze 1 (better than takeaway on frantic nights - microwave defrost and oven heating is as fast as takeaway, cheaper and better nutrition). I've changed a lot of food shopping habits, doing a lot more shopping around and getting some things in 1 store and others elsewhere - using our F&V shop, butcher, fishmonger etc more too. And I get all my spices and lots of ingredients (tins coconut milk, rice, noodles etc) in the Asian supermarket too. And I am more rigid again about menu-planning and making a list before I go shopping. So while it can change if the offers are good, I am buying to a plan rather than at random and throwing out loads at the end of the week.
We sometimes get 1 takeaway per week - but it wouldn't be 4 per month. Often Fridays, but I have more fast and easy options for Friday dinners now that I've learned.