Don't count hairs.
I know you read the 100 hairs/day metric everywhere, but don't buy into the hype.
Keep in mind that hair sheds are normal, experienced by all people both male pattern baldness-suffering and non-male pattern baldness suffering alike, and are NOT uniformly scheduled through an average day of a human life. In other words, just because a loss of 100 hairs a day might be an average does NOT mean that humans who lose over 100 hairs in one particular day are behind schedule and destined for the horseshoe look.
Hair sheds come in cycles, and hairs are not shed uniformly. An average man will have months where he will lose more than an average amount of hair, and other months where he will lose less than an average amount. Although the median hairloss might be 100 per day, on a day to day basis this figure could vary widely. It is very typical for a person to lose 200, even 300 hairs in a day for an entire month, and then in the following months only lose 50-60 hairs a day.
Thus, measuring your 'hair loss count' on a daily basis will not give you an accurate picture of what is going on with your hair on a long term basis. So, don't count hairs, and instead concentrate on keeping consistent with your treatments and getting a sense of your scalp health.