He should work on getting bigger, faster, stronger, more skilled and play wherever coaches want him.
My son went from catcher to short to center from 12u to high school. He was recruited for college ball as an outfielder. His first start was at second. By junior year of college he had played everywhere but pitcher and catcher.
In travel he played whatever position the pitcher came from until his 17u coach made him a center fielder.
The moral of the story is become the best player possible and hit the ball. Coaches find positions for players that hit. Because high school upperclassmen tend to get the priority positions, unless there’s a specific opening it helps to be able to play right or left to make varsity in the early grades if you hit.