I’d make healthier changes to the diet like low carb(if it’s not healthy already) some strength training would help. All this could definitely help in losing weight. Better to give it a go then to have never tried at all.You can always start slow and working your way up. I hope your weight lost plan goes well!
>Should I expect to see some weight loss if I have been doing 18:6 with no change to my diet?
In theory, yes. If you traditionally ate say a heavy breakfast(or whatever meal was getting cut), snacked a lot, but kept your remaining meals the same you’d be cutting a lot of calories and lose weight. In practise, it’s not that simple. Whether underestimating calories or portions, overestimating exercise, etc, just having a smaller eating window doesn’t mean we’re eating less.
At the end of the day it’s still a caloric issue. You’re either in a surplus, at maintenance, or in a deficit. If you’re not happy with your results then find a sustainable way to reduce. Though this may be something to discuss with your doctor considering your medical condition.