Hi there MrsP - well to answer the question about the sleeve size, no you will never be able to stretch it out to the size it once was. It's not possible. We are left with the portion of the stomach that is much less expandable. I went to a seminar with Dr. Cirangle and he put it like this: the portion of the stomach we are left with will only stretch to the amount a billfold would. So you know how a brand new billfold is tight? Well after years of stuffing it will money, CC's and DL's, etc... it's going to stretch. However, it will have it's limit. See what I mean?
Here's what I think, but it's my opinion only; perhaps you are eating slider foods? You will not feel restriction with slider foods as you would with more dense lean Proteins and veggies. Sometimes its not so much of HOW MUCH we are eating, but rather WHAT we are eating. Could it be that you are consuming fluids too soon after eating as well? This absolutely will flush your food out of your sleeve faster than had you waited a half hour to an hour after.
One last thing, I'm huge on workouts. IMO, it is a necessary part of changing our lives. Imagine if you worked out for even one half hour per day 5-6 days per week. You can probably burn an additional 4-500 calories more per day than if you had not done it. That's almost one extra pound lost per week just for 30 minutes of your day! If you do this properly, it also helps to raise your metabolism. What I do is I will workout first thing in the morning, and drink a 20 oz bottle of Water with it. Immediately after I'll have a Protein shake to get my early protein going. This always works amazing for me, and trust me when I say, I can tell the difference when I don't do this. Speaking of water, it is really important to stay well hydrated during weight loss. Not only is it just healthy but it also helps to flush out the fat cells.
HTH and I do wish you well!!!