No, you haven't lost restriction.
Unless your stomach has stretched to the preoperative 40+ ounce capacity and you can easily accommodate 10 bacon/egg sandwiches at one sitting, your restriction is still there.
People seem to be under the impression that the immediate post-op phase in which their tight, swollen sleeves allow them to become full off 3 to 5 bites of food lasts forever.
Nope...the stomach continually relaxes and accommodates more food over the years. Per bariatric surgeon Dr. Matthew Weiner's videos, this is a normal phenomenon.
By 3 to 5 years out you can expect to accommodate three-fourths to 1 entire plate of food (8 to 12 ounces). But just because you can eat this much doesn't mean you should.
Good luck to you.