Guys, i spoke with a very well known dermatologist in New York who specializes in hair loss.
whether you are gentetically prone or not, exposure to high levels of dht over a certain amount of time will cause hair loss issues.
When i was doing 100 mgs per week just as the OP has done, my dht was over 150 the day after injection. Thats very high and constantly being exposed to high levels will eventually cause issues.
breaking up the dose in half and doing it twice per week ( tuesday and friday ) will certainly help prevent this- high dht spikes.