I started drinking topical minoxidil around a week ago and now a bunch of hair is falling out

I have been on oral finasteride and topical minoxidil for years but its not enough and i cant get minoxidil pills so i am drinking it (0.05ml dose twice daily of 50mg/ml minoxidil). I never had any shedding previously, is this shedding? It has only been a week

Edit: 0.05ml* not 5ml