forge wont install now that i changed my .minecraft file location

[fatguy46]

so i ran out of space in my C: drive and i wanted to move my minecraft folder over to my D: drive. I simply copied the whole folder, pasted it in my D: drive and deleted the one in my C: drive. I then went to my launch options and changed my game directory to the new loaction. I soon found out that forge was gone, so i went to go reinstall it. (already had forge installer so i used that, and i also changed the directory to my new minecraft folder)

after that, it didnt show up in my launcher. I reinstalled forge, didn't work. But, if i didnt change the directory, it made its own .minecraft folder! it was in the exact same place as my old one. it was in my launcher, but still, I had no texture packs or mods, and it was in my D: drive. thats all, SOMEBODY PLEASE HELP ME I JUST WANT TO PLAY MINECRAFT

also here are the instructions i followed https://gaming.stackexchange.com/questions/179373/how-to-transfer-minecraft-root-folder-to-an-ssd-drive