Hair loss increased after changing Minoxidil 5% to 2%. Is this normal? (Photo)

Am 32yrs female. Mar 2015 my dr found m having FMHL. He prescribed me hair grow minxdil 5%,kenozole shampoo with streetabs witzinc. improved. After 4months he changed 5%to 2% with same shampoo n senital hair vitamins tablet. Now my hair loss were increased. My scalp is More transparent.also have split ends almost from the root. Am not coloring n heating at all. From the last 6 months am facing this. What can I do? Shall I switch to 5%? I saw very mild uncolr baby hair.but scalp more visible.