Hello..
Well the amount of hair fall which you are mentioning is very minimal...I don't think you have to worry about it...well thinned out hairs may be genetic or due to changes in weather,water food intake as in protein insufficiency,
calcium deficiency, anaemia etc... I need to examine you for that...its better you consult a dermatologist... Make sure to have protein rich diet..have good green leafy vegetables, dry fruits etc..drink plenty of water too
Next Steps
meet a dermatologist