It's tough Wendy!
I feel like I have struggled with my weight since I quit.
Then I remember I was constantly on a diet before, too.
In my opinion, it is something that one has to monitor. But! It's a heck of a lot easier to monitor than all the thousand horrible things that go along with smoking. About a year and a half in, I'm 7-8 pounds more. Not thrilled about it, but I fall off the diet wagon on a very reg basis.
Point is: do not start worrying about your weight until you are ready to. The quit is the most important thing of all. So if you have to eat bigger dinners (I do) to stay quit, so be it.
I think a comment was made by someone not thinking it through, and thank goodness your child could not possible understand what you are going through. If you gain a ton of weight to stay quit, it's not best case scenario, but really, you can deal with that when you're ready. So it's not really a big deal if that happens. Because yipppppppeeeee you quit smoking and are a rockstar!
My father in law made a comment to me 13 years ago that I could stand to lose some weight, and I've never forgotten it. A smoking friend spent a weekend here last spring and we had breakfast (I don't skip breakfast on weekends anymore as a non smoker, so sorry!) and she had like 1 piece of toast and an egg and said, "oh! Couldn't possibly eat any more!" While I was just tucking into mine, and I had had no intention of only eating half. She then went out to smoke, and I stayed inside feeling like a real glutton.
It's a subject I think that will always be a work in progress for a lot of people. That's ok!! It's manageable. I eat a lot popcorn mini bags and fruits and veggies. They are not "fun" but you get a lot of food for lower cals. Helps with the whole oral fixation thing.