Your JW teacher won't be treated poorly by the congregation because you quit the study. Everyone will say that Satan got to you but they won't blame the JW. I have never in the 40+ years I've been associated seen anyone treated poorly because a "worldly" (sorry, I don't mean that as an insult to you, just using the phrase JWs would use) person quit a study. Now, if you were the persons child, that would bring some impact but really so many born in JWs leave, even that wouldn't be that big of a deal.
You will lose their "friendship" but keep in mind, ALL relationships as a JW are conditional. But, it won't be the same as being disfellowshipped. They will still talk to you in efforts to recruit you again. But, I don't they duck you in public.
I'm happy you woke up before you got in too deep!