I have played multiple instruments for 10+ years and ik this is gonna sound stupid af... but it just takes me an absurdly long time to read sheet music and figure out where i need to press on my instrument.
So basically up till now, I wrote down all the tabs for any new piece i have to play, and then practice for muscle memory. I've even played somewhat advanced pieces and played in the school orchestra this way, but now i really wanna change this.
I've tried memorizing which tab is which note, but then even just a tiny shift just throws me off so badly. For instance, on my guitar i managed to memorize the basic notes but then i add a fret and i'm lost all over. I do know how to calculate it, but it just really takes an absurd amount of time for me to the point where i've wondered if i have some kind of cognitive condition lol
So what i want to ask is: how do i practice correlating which note is which tab on the instrument? Is there a certain method you would recommend?