@Tara Lyons When I first developed tinnitus which was from loud noise, I also experienced sensitivity to sharp and loud sounds. All sounds were louder as I also had acoustic shock disorder. At the hospital where I worked, the ice machines and even elevators became over bearing.
I knew there was a condition called hyperacusis and I also knew of a condition called misophonia. I decided that I needed to avoid loud noises, but not all noise even with ASD. I knew that I needed to make a decision on treatment. I decided that I needed to use defender headphones only around loud noise. I also decided to use very soft - below whisper pink sound - brook or rain - ten feet from my head to start with for two hours a day and all night. I knew that I needed to do this for hyperacusis and not to develop misophonia, which I knew was happening. Treatment or the length of daily therapy that another may need depends on factors that can't be determined by conversation on a message board.
To answer your question, I only used hearing protection when I was in a loud noise area that I could not avoid. Over protection lowers the auditory threshold. I was was the threshold of developing misophonia. I knew that I needed to quickly realize that I could not use ear protection, unless around loud noise. I took magnesium - it helps to maintain auditory threshold as the stress of tinnitus could deplete magnesium. Magnesium is good for stress, hypertension and anxiety, but should not be taken at the same time with medications. I took 1/3 tablet three times a day. 1/3 was taken one hour before sleep.
https://en.wikipedia.org/wiki/Misophonia