I am 7 weeks out, and had similar concerns...it seemed like I could eat more than I was supposed to be able to, and I had no sense of being full. But after experimenting a bit, I think I've figured out what's going on. If I measure my food and eat only it, I don't feel hungry and I don't feel full. But on the couple of occassions when I either unthinkingly or deliberately ate MORE than that, the sense of "too much" came very suddenly.
So I guess what I'm saying is that it seems as if when you don't either get that sense of restriction or feel lousy and lose your cookies, it's because you ARE eating the right amount. You're doing exactly what you should be doing...measuring and stopping when you finish. For me, I needed to push the limits (not always the wisest life choices) to see what it woud feel like if I ate too much. After I did that once or twice, I figured out it was better not to and realized that I couldn't actually eat as much as I thouoght I might be able to....I just couldn't tell where the line was until I had passed it.
And by the way,, I was eating a 6 oz. container of greek yogurt or 3/4 cup of chili (which is still wet, so easier on the pouch) at 4 weeks, maybe even 3. And at 7 weeks...that's still the right amount for me.