I think the idea of a "Leptin Reset' is fundamentally flawed from the start.
First, how do you know if you are 'leptin resistant'? Secondly, how will you know when you are 'cured'?
The supposed gold standard for knowing if you are leptin resistant is the 'mirror test'...look in the mirror, if there's a fat person there you are leptin resistant. The cure? Eat a big ass breakfast of 50g protein within 30 minutes of waking while exposing your eyes to morning sun.
How do you know when you have achieved 'leptin sensitivity'? Presumably, the fat person in the mirror will now be thin and attractive...you may also 'notice changes' in your sweating patterns (that's it, no further explanation), and for you, calories will no longer matter! Congrats! You are now LS and healthy!
All the questions you've asked have been asked a million times before and never really answered well. If you do everything you think you are supposed to, and you are still overweight, you either did it wrong, or need an advanced protocol like ice baths, blueblocker glasses, ketogenic seafood diet, or even a prescription for hardcore drugs like metformin or thyroid.
Still fat? There's more! Maybe you just need some more electrons...you can get them by swimming in the sea, moving far away from cell towers and sleeping on a grounded sheet.
Still fat? See where I'm going with this?
Here's my advice: Eat a large protein breakfast if you like. Follow the Primal Blueprint to the 'T'. Still fat? examine your exercise, eating, and sleeping patterns. Maybe play with macros a little until you find a set you can live with and not gain weight. The first step to losing weight is figuring out what it takes to not gain weight, then tweak a bit at a time until you are slowly losing weight.
No one knows much about leptin. If you tell your doc you think you may be Leptin Resistant, he will laugh you out of his office. Leptin is a real thing, but you can probably do as much about it as you can your eye-blinking habits--it's just there. If you had a true leptin problem, you'd probably weigh 700lbs and need serious medical intervention.
Eat, sleep, and exercise according to Primal Blueprint and your leptin will be just fine.