Re: taking care of a torn frenulum...
I was a slow learner. I just couldn't leave it alone. After a couple of months, I went to the doctor. He said he could take care of the problem, forever, with a simple circumcision.
I said, "no thanks", it being the most sensitive part of my body.
Once I stopped masturbation, sex, oral, etc., and gave it the total rest it needed, it healed in about a week or two...after three months or so of tearing.
Most likely, all it needs is quiet time. Good luck.