Notice hair fall after 6 months hair transplant. Is it normal? I am using Minoxidil 5%. Is microneedling safe?

I am 26 years old and had hair transplant 6 months ago..I notice around 20 to 30 hair fall per day..is it normal??.I am using minoxidil 5% one time in day..Is miconeeding 0.5mm is safe once a week??