I cant shut up and its killing me

so I have ADHD and when im happy i get so loud and talk so much, especially with people i like. I hate it, i think people find me annoying and i sure do. Its like i cant stop, i tell myself to just be quiet but i keep talking and i can never finnish what i wanted to say bc i get side tracked and has to tell every single small detail there is. Im so tried of myself, i cant function and im not officially diagnosed soni cant get treated. (i have to wait 2 years even tho theres like a 98% i have it)

Also, when im sad or tired i just shut down, im to tired to say anything, i cant even force myself to talk. And when im around people that annoy me i literally turn deaf, i just tune them out and dont respond and ofc this makes me seem mean but i cant tell them to stfu bc im literally like them. Ksjsjwbskkbbknknfbe what do i do