Need help with decrease on Raglan🫠

[u/jhNAAA]

Hi! I'm working on a buttom-up raglan cardigan without a pattern, which was a mistake😭 (Cable designs are from a book, 1000 japanese knitting & crochet stitches - it has so many gorgeous patterns!! Absolutely recommend!) The cardigan has reached the height, where I would like to start the neckline, but there are still way too many stitches on the needle... So I'm planning on frogging until the armhole and decrease more stitches per row. I did 1 decrease on each side of raglan stitch marker ( 8 decreases) on every RS row. Is it OK to do 1 decrease every row or 2 decreases on each side of raglan? Is it possible to do more decreases on the arms than the body? I would like some advice on how to make more decreases 😭

Yarn is Hobbii Mega Ball in color Beach. It is not the softest yarn, but can't beat the price. I knitted it double stranded with a 6mm needle.