Here are some selected articles, discussing the weight issues and the concern you raised of not being able to get past what seems to be a predermined length of time smoke free. Hope this helps.

 

Joel

 

 I would rather be a little overweight and not smoking...

Mimimizing the weight gained after quitting smoking

Patience in weight control issues

After I Lose Weight I Will Quit Smoking

Weight Gain Concerns After Smoking Cessation

Eating Healthy - Blood Sugar

 “I’ve tried everything to lose weight but..."

I am including the next two because they discuss people worried about losing quits in a specific time period:

The terrible threes

The Miserable 3's

You must understand that you didn't lost your quit by reaching a predetermined point in time like a two month mark, but rather you lost your quit each time at the two month mark because you took a puff on a cigarette at that point in time. I can absolutely guarantee that if you don't take a puff or administer nicotine via any source any time during month two this time you will shatter your record and make it to month three. You will continue to set a new record every day for the rest of your life if you then continue to stick to your personal commitment to never take another puff.