Change from Oral 1.25 finasteride to 0.1ml finasteride topical - could I be losing my regrowth?

Hi I have the last 10 years. Taken finasteride for hair loss. 1.25 mg 5 times a week. In January this year, I decided to switch to a topical 0.1 topical finasteride. The hair has become much thinner, the hairline has become smaller and the hairdresser has also noticed it. I used Minoxdril topical 5% from 2016 to 2019. But had to stop it because of structural change in the heart. Left ventricle. Could it be that I'm losing my regrowth now?