I am getting a hair fall and dandruff issue for 3 months especially since I might be losing around 50-100 hair follicles while washing my hair with shampoo and around  30 -40 hair follicles normally. I have some grey hair with around 50-60 follicles as well which are there from 15 years My sleep schedule is 5-7 hours and fluctuating  and also my weight has been reduced from 64 to 57 in a year. I have had a sedentary lifestyle. For 3 months before that, I was having a pretty active lifestyle with a strict diet I mostly travel by train and on normal public transport In my day-to-day. Work routine I wash my hair with shampoo twice a week and daily I just have a water wash I oil my hair daily with coconut oil and once a week with onion oil all this began hair fall issues began in winter so is it normal?