Is it possible to change the way chunks load using mixins?

Hello. So I am making a custom dimension, which is 2880 blocks tall. Because of that the chunk columns are ~7 times larger. And take ages to load. I tried many things to optimize it. But nothing works. So my idea was to essentially remove chunk columns. And make chunks load based on the y coordinate as well. So if the player is at y 500, then the chunks from y 0 to y 1000 load. If the player moves up to y 1000. Then the chunks from y 500 to y 1500 load. Etc. Is it possible to do something like that using mixins? Or anything else for that mater. I am using MCreator 2024.4 with the mixins plugin btw. Thank you!