Looking at the birth chart we see that Sun and Ketu period is going on. Sun is 8th lord which is not good period to be in. The Sun mahadasha will complete on 28 January 2023. In-between more he will improve, but still will go through a tough period which will need a lot of medicines and some therapies. The time may be tough, but improvement is certain in the period ahead.
Doing the remedies will help.
1. Recite Mantra “Om Ghrini Suryaya Aditya Namaha”
2. Read Hanuman Chalisa daily
3. Feed Dog daily