change up

hey my names evan im new here. i am going into my first year of jv and my 4seam tops out at about 74. i have a nice change up but whenever i try to change speeds it gets hit hard. that usualy makes me rely on my fastball which gets me in to more trouble. i also have a nice cut. any ideas?
thanx

Welcome.

Regarding your change-up, it could be you’re just not locating it properly (like keeping it low). It could also be that you tip your pitch somehow so batters know it’s coming.

Try thowing it outside. Batters normally let outside pitches travel further which means they wait longer to swing. Throwing offspeed outside makes it really difficult for batters to wait that long.