Wow I'm kind of more the opposite now at 29. I don't go out as much so I don't get burnt out socially. I can't get off the laptop or even the bed most days and I can go much longer 24 hours researching interest topics. I'm not sure what it is but my stims have even gotten worse than ever. I sometimes a sack of sleep makes my senses play up bad and thats when the stims start to pick up.
Sure I couldn't act like this around other people, but keeping up the constant social normalcies becomes so exhausting. Its strange actually because as a kid I was always really over the top and loved to socialise, still pretty s**t at social cues back then but I was totally bossy and answer of peoples boundaries or needs. Very different to a lot of Aspies. Now I'm still an extravert, just with a little social-phobia and agoraphobia and now says I just want to sit alone and learn.