drago-1
This is what I'm doing currently: an old phone used exclusively for whatsapp (with an empty contact list); it always stays at home. I only use it to coordinate kid's stuff (school, social activities, etc), so there is no problem with me not having it with me the whole time.
Prior to this, I've done IF (18:6) for 18 months without any visible weight loss simply because I was ingesting the same amount of food just in a shorter interval.
It really started working when, in addition to the IF (which I kept for other benefits), I started restricting my calorie intake - not counting calories, but simply setting a reasonable portion size and sticking to it, only reducing slightly after 7-10 days of lack of progress.
Other things that helped me greatly:
-don't sit at the eating table while being (really) hungry!
I have a snack (fresh fruits, vegetables, various nuts) 1 hour before the actual meal, such that when sat at the table I am in control, and can stop eating easily.
-prepare your food, place it on a plate, take a picture and send it to a friend before starting to eat!
I used to start eating as I was preparing the food, and it becomes hard to keep track of how much you ingested. Plus, when you take a picture to send it to someone else, you look at it with different eyes, and it jumps out at you: Hey,this is a lot of food!)