Recommended number of hair loss treatments for a scalp thinning due to stress

I have been so stressed lately while preparing to change jobs that at some point, the number of hairs rolling around on the floor more than doubled compared to usual.
I can clearly feel that the thickness of my hair has thinned out when I tie it up, so a sudden sense of terrifying fear washes over me, and I am having trouble sleeping at night.
Even though I drank black bean milk every day and massaged my scalp vigorously with a massager, I found that once hair roots are weakened, they can never become strong again with home care alone.
So, I firmly resolved to go directly to a dermatology clinic and begin a professional hair loss treatment that involves injecting very beneficial nutritional ampoules into the scalp.
I heard that since the needle goes directly into the scalp, it hurts so much that it makes you tear up. I'm so scared wondering if the pain from the hair loss procedure is bearable if they use anesthetic spray.
And I heard that there is a hair growth cycle, so magical things like baby hairs growing rapidly in just a month or two absolutely never happen.
How many times do I need to strictly adhere to the recommended number of hair loss treatments and attend the clinic regularly to fill in my visibly sparse parting with dark downy hair?
Even if it is quite expensive and involves pain, if I can just regain my thick hair, I will definitely undergo all the hair loss treatments the director recommends until the very end.
We desperately need testimonials from Maypure members who have patiently and silently undergone hair loss treatments and succeeded in densely filling in their thinning crowns.
I have taken to heart the advice that it is best to visit the hospital as soon as possible before my hair follicles completely die, so I will call to make an appointment tomorrow. Please give me your support.