Question) How long is the maintenance period after injection treatment for frozen shoulder?

I visited the neurosurgery department because my shoulder has been hurting too much over the past few months.

I took a picture at the hospital, and they said there is inflammation and it shows symptoms of frozen shoulder.

Since the movement of one arm is limited, certain positions cause me a lot of pain.

So, I decided to undergo injection treatment.

They say they will receive injections three times, but I wonder if the pain completely disappears after the injections.

I got hit yesterday, so I was a little sore.

They say to do physical therapy along with exercise, but I wonder if those who received injection treatment for frozen shoulder experience no pain after treatment and can maintain it continuously.