I would start "unmasking" in steps maybe...like first, start when you are in private. Every time you catch yourself stopping yourself from stimming, remind yourself you let it all out. Once you have normalized your stimming and other natural behavior in private, figure out the next step for you...for some, that may be your family/close friends, but for others it could be at the library among strangers. Keep going until you feel healthier.
There may still be times you find masking or redirecting stims beneficial (like maybe avoiding auditory/spoken stims during class, a presentation at work, church service, etc. and replace them with something quieter like rocking or twirling your hair), but if you reintroduce them to most of your life, that may take the pressure off.
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~AQ 32; not formally diagnosed.~