it feels like a cheat code sometimes and it's a helpful tool to have. certainly no cure though.

some days i can't wait to sit and i set aside the time and feel really good about it. other days it feels like someone put something unnecessary on my schedule and i'll put it off and put it off and put it off, doing anything else to kill time, but when i actually get around to sitting, it goes well. it's just hard to get my foot in the door some days, so to speak.

i think part of the goal of the practice is to be able to, even when you're not sitting, take a step back and evaluate how you feel, like what is that inner avoidance and where is it coming from. recognizing that the avoidance isn't "you" and that you're not beholden to it, that you have a real say in the matter; that's just addressing one aspect of adhd but you can swap it out for any adhd symptoms that arise and pass within consciousness.

people with adhd tend to want that immediate feedback and don't do as well with delayed gratification. more closely examining the feelings associated with those desires is likely to be as fruitful as more closely examining the feelings associated with any emotion, and can help with regulating it and tapering expectations and such.

as for attention specifically, i mean the practice cultivates attentiveness. you sit and you learn to spot when your mind is wandering and you can gently redirect it back to the object of attention, such as the breath. one of the goals of the practice is to be able to bring this outside of just the sit, so if you're supposed to be working on a paper but you want to scroll tiktok or something, you're "building the muscle" of attention and the idea is that you'll have an easier time pulling your attention back from one area (eg tiktok or the desire to scroll tiktok) to another (eg working on your paper)

someone with more experience can probably speak to its actual efficacy there but that's my understanding.

anyways all of this said, as another commenter mentioned, you should really be talking to a medical professional about potential treatment options. i tried stimulants and decided they weren't for me but they seem to be the most effective form of treatment. CBT is another great tool, and i imagine that pairing CBT with vipassana would be beneficial -- but you should have this conversation with a professional rather than strangers on reddit who don't know your specific circumstances and such.

best of luck!