Pamasich

For example, I finally learned how something works after months of trying to wrap my head around it. Didn’t end up using it for a few months more, and now I forgot it again. I’m back to square one, trying to relearn things I already learned.

If this is such a frequent problem, start writing down what you’ve learnt. Get a notetaking app (my personal choice is obsidian) and record any knowledge that took you work to acquire. Then next time you need it you can just check your notes and there it is, instead of having to put all that work into it again.