Now, I have tried many things to get it to work, including the advice I was given in my original post 

After I couldn't get that to work I looked through Github and found TropiCraft, which literally changes cloud height (It even says it in their Access Transformer File). https://github.com/Tropicraft/Tropicraft/blob/1.16/src/main/resources/META-INF/accesstransformer.cfg

But Still, it doesn't work. Yes, I tried doing it myself and understanding what I was actually writing in code, but then after much frustration I just carbon copied from TropiCraft.

I just don't know what I am doing wrong, especially since I ended up practically copying from TropiCraft which does the whole cloud thing successfully. 

Here's my mod repository if anyone wants to take a look, I'm going on vacation (figuratively) https://github.com/FireTamer81/1.16.5-DragonBlockCore/tree/main

 

These are the files related to the problem:

DBCoreMain
ClientStuff
world/dimensionStuff/DBDimensions

time_chamber_dimension.json
time_chamber_biome.json
time_chamber_surface_builder.json

resources/META-INF/accesstransformer.cfg

 

this  is the first problem i found, you set the cloud height there to 20.0F, the soulution would be to replace the '20.0F' with 'Float.NaN'
the next thing is you need to call this inside of FMLClientSetupEvent#enqueueWork

 

Well, I had tried "NotANumber" a few times, and I even did it in enqueueWork a few of my attempts. I'll try it again though

 

Nope, didn't work. I updated the repos just so it can be seen in it's current state

first of all do not use @OnlyIn, it's only for vanilla
you never set the effects field in your dimension.json file
add the following line into this file (to the type part)

    "effects": "dragonblockcore:time_chamber_dimension",

 

It worked............... IT WORKED!!!!!!!!!!!!!! I could kiss you!!!!!!

 

Thank you so much mate!