Yes, in most cases. Frankly, it depends on you. You are in charge of your mouth-resting posture, and your swallow. Your “swallowing system” will get used to doing the new pattern. But don’t trust it! Check on your tongue frequently to make sure it’s doing good positions and swallowing movements. Most of the time, if your new swallow is consistent and your old swallow has not returned after six months, you’re good. Chances are it will not return.