Forget having the ability of being able to constantly get chunks of my time focused on deep work, I am having trouble focusing for more than 15 to 30 mins on ev

Forget having the ability of being able to constantly get chunks of my time focused on deep work, I am having trouble focusing for more than 15 to 30 mins on even trivial stuff like watching a video or reading an article. I can barely get through 15mins of anything before my mind seems to wander off. No wonder it takes me a couple of days to finish a movie. I gave up on even the thought of going to an actual movie theater. I constantly have to pause and come back to whatever I am watching/ doing. I had ADHD as a kid, it gradually seemed to have gone away over the years, it's been a while since I've taken any sort of meds. But lately, for the past year or two, I've been struggling with this. I need to change my lifestyle a bit, take up some meditation, or maybe even go to the doc again. Or a combination of all. It's just frustrating.