Yikes - I read the same thing about eating every 3 hours cos it helps keep the metabolism going....however, depending what you eat I worked out this could involve more needle pokes (and resulting holes!) a day than your average colander.
Aas a woman I am forever on a diet (tried pills, combining, starvation, even DKA when I was first diagnosed....never again!) to lose weight but have had to resign myself to the 'eat less, move more!' way of life.
Studies have now proven that it's not how often you eat, but the total calorie consumption that affects weight loss long term.
I found reducing carbs did help me (trying to come in at around 70-100g a day)- I cut out pasta and white, refined carbs and cereals, but still eat multigrain bread (2 slices of peanut butter on toasted multigrain keeps me going for about 5-6 hours!). I also found that by having 20g or so carbs in the evening (couple of new potatoes in their skins/slice bread), I felt less bloated and got much better morning sugars.
It's different for everyone, but I think the most important thing to focus on is WHAT you're actually eating rather than WHEN.....
Low GI foods help to control cravings and make you feel full for longer (wholegrains etc), plus I hate dark chocolate but Hotel Chocolat do a fantastic milk chocolate called "Macho Milk" that is 50% cocoa so gives you that hit, but also contains less sugar. My husband (a sugarholic!) now has a separate area in the fridge for his 'junk' sweets and knows he's in divorce territory if he so much as sniffs mine.....(love, eh?!
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Best advice I can offer? Keep a food diary. Try and record everything you eat and drink (inc carbs if you can - Collins Gem do a great little booke for under 3 quid!), then see where yoiu can make healthy changes.....even upping your exercise will help!!!
Let us know how you get on - always looking for inspiration!!!
ma5on x