This new RT may mean you are developing some element of hyperacusis. Don't panic. That is quite common. I agree with Dana. The more we are scare of T, the worse it can get. To me your reaction is suggesting to the brain that T or its morphing is a big red threat, and with that your brain will zoom in on T's every move.
Take it easy. Your T is so new. It is morphing as it goes, and developing some level of H is quite common for high pitched T. It is also very common for people to get freaked out by RT when it first appears, because it begins to put limits on what you can do. I used to withdraw from social events and hid myself in a quiet room. I panicked like you, not knowing what to do with a life time of RT. But the reactive aspect is usually due to some level of H, and for many, H just fades slowly over time. So don't get too stressed out by the new development. Treat this as a process, part of the total package of T which includes morphing during its young stage and some element of H. Try to grind out these bumps along the way without panicking, because anxiety and stress can not help but make T worse. Try your best to stay calm and positive. Take care & God bless.