(PS edited to say sorry this is so long, sometimes don't know when to stop. Of course now it is even longer,

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Hello fellow maintaineers, and those who will be soon.
I've learnt a lot by reading others' strategies, so here is mine for what it's worth:
1. Continue the version of 5:2 I did to lose weight (see 3), since my weight loss had just about stopped at the point I decided was goal. If I get 4 pounds below goal, I'll have a week of 6:1.
2. Weigh a couple of times a week. Post on my maintenance thread on 10th day of every month - this concentrates my mind considerably coming up to posting date! Because I am NEVER going to post that I am above goal. If I ever see a weigh-in above goal during the month, I will revise the strategy. Probably to challenge what I eat on the feast days - not as far as calorie-counting, but to cut out some of the known high-calorie indulgences. Then if I'm not at goal by the 10th of the month, I'll cut off my hair. Then my toes ... Just kidding. I think.
3. My version of 5:2 is:
(a) Eat and drink absolutely anything I want 5 days a week.
(b) 2 days a week cut calories to about 700-800. This includes about 600 calories worked out reasonably exactly and aiming to be fairly healthy, lowish carb, plus as many veggies as I want (which can be A LOT!). Drink diet coke on any lean days that coincide with a pub night. I used to spread my eating over the day, but under the influence of this forum I now skip breakfast on the lean days. On lean days I have early lunch, early dinner and a little supper.
I have to admit to some amazement that my maintenance strategy is working, considering what I consume on 5 days a week, but so far the scales say it is.
This makes it all sound easy, but it isn't, quite. What I find hard is:
(a) I get pretty grouchy on the lean days - husband can confirm! I certainly don't enjoying fasting (although compared to what others do, I guess I don't actually fast). I sometimes think of going to 6:1, but then I'd have to be more careful on the 6 days. I did have a 6:1 last week and my non-lean Friday felt like the most wonderful holiday.
(b) Although I think that my appetite may have got smaller, and I'm not so strongly attracted to large amounts of poor quality junk food, I still don't feel in control around food. I still get feast days when I feel like a bottomless pit that needs to be filled, and snacking becomes almost continuous. The whole thing seems a bit precarious somehow. But I have 50 years of yo-yo dieting behind me, so a few months of maintenance is early days for me really.