Drastic and sudden change in hair loss condition

In the last couple of weeks, my hair condition worsened, I started shedding a lot and had an itchy scalp even though I am still on Propecia. So bad that for the first time my barber used hair fibers last week because of the thinning. My hair was somewhat manageable before but now it looks much worse. I know that in winter my skin gets pretty dry but otherwise, I don’t know why this is happening all of a sudden.

I have been taking finasteride / propecia for the last 4 years, one every 1-2 days. I was also on minoxidil but I stopped 2-3 months ago and planning to go back on it + microneedling as soon as I get the bottles I ordered

Is there anything I can do to stop it or improve my hair?

I am going to buy some clay and Aveda thickening tonic and a beanie to try and hide my hair for a while, this has taken a big toll on my self-esteem.