Minecraft accelerate growth only in certain perimeter?

I want to program a datapack and now ask myself if I can only accelerate growth within 10 blocks of the player.

This is as far as I do not know possible. But you can put the blocks with relative positions simply by Command.

I think he means the randomtickspeed. It affects blocks within 100 blocks and this can't be changed except by modifying the game as far as I know