All of the patches currently double the amount of spell slots by x2, If reqested I can upload more multipliers. Also all patches require their parent mod as I only patched the files pertaining to spell slots.

Unless you install my core mod (Double Spells - Core/Improvement Edition)  vanilla classes will not have more spell slots so I recommend you use that with the other patches

Patches Currently Done: 
UnlockLevelCurve - Level 13-20 5e Version & Improvement Editon
Celestial Warlock
Shadow Sorcerer - Subclass
Hexblade 
Necromancer Subclass for Warlock - Dread Overlord & Improvement Editon
Circle of Stars Druid Subclass
The Raven Queen Patron
Wizard Traditions - War Magic
Magus Class
Bard Subclass - College of Glamour
Crimson Oathsworn
Warlock - The Undead subclass
FF14 Red Mage Class

Author's Notes:
For my core mod I doubled the sorcerer points if thats an issue lmk and I'll make another patch. 
The Improvement edition gives you a feat every level up.
For UnlockLevelCurve - Level 13-20  I also doubled the sorcerer points if thats an issue lmk and I'll make another patch.
For the Magus Class I doubled the spells you get at lvl 1 and doubled Arcane Point's after level 1.
All current patches except for UnlockLevelCurve - Level 13-20 currently onlu support Double Spells - Core, If you want me to support the Improvement Editon shoot a comment.
If you are a mod author and want me to patch your class/subclass lmk and I'll be happy to do so.
If you want me to patch another mod not on this list lmk and I'll contact the mod author for permission.
I'm fairly new to modding this game so please bear with me. ╰( ▪‿▪)╮


Compatibility:
In theory this should be compatible with most mods I highly recommend you use Subclass Compatibility Framework by NellsRelo but be sure to load these patches AFTER otherwise it will just crash.

Credits:
Larian Studios for creating Baldurs Gate 3
nitram166 for creating UnlockLevelCurve - Level 13-20 
FluffyDragon24 for creating Celestial Warlock
Baaleos for creating Shadow Sorcerer - Subclass
Feriat111 for creating Hexblade 
dreadoverlord for creating Necromancer Subclass for Warlock - Dread Overlord
havsglimt for creating Circle of Stars Druid Subclass
GladoffelLp for creating The Raven Queen Patron
fierrof for creating Wizard Traditions - War Magic
Gycicada for creating Magus Class
Bonebreaker687 for creating Bard Subclass - College of Glamour
Eddymayne21 for creating Crimson Oathsworn
CyberSpektre for creating Warlock - The Undead subclass
Aetherian29200 for creating FF14 Red Mage Class
FrozenLayer's More Spell Slots mod for giving me the idea 

Current possible bugs:
One of the core files is breaking the level up mechanic (Gonna test today to try and replicate)

Known Bugs:
Storm sorce doesnt give the fly ability at lvl 18 "seems to be an issue on ULC's part but I will attempt to fix it"

Planned:
video to create your own patches

Credit fully goes to the mod authors that allowed me to make the patches all I did was edit some numbers.
Please leave a bug request if I missed/messed anything up.