I wrote (most of) a song that’s mostly in 15/8 that I’ve been trying to play up …

I wrote (most of) a song that’s mostly in 15/8 that I’ve been trying to play up to speed for months now. I still play it really awkwardly. However, this is still better than it was, unbelievably.(To be clear, it’s not the 15/8 meter than makes it hard for me to play. It’s that I’m not sure to playing two sixteenth notes at one pitch then immediately playing another pair at another pitch on another string.)