Energy "stopped" flowing?

I've concluded the three Reiki degrees one year ago, but I have been a long time without appropriately using it (with appropriately I mean the right 14 positions, during the recommended time). There were days I didn't use it at all. Now, when I practice it, I don't feel the energy flowing through my hands and I wonder if somehow I lost the ability to channel the energy. I asked my Master is this was the case and she told me not because actually, even if you do not evocate the symbols and apply the energy intentionally, you allow the energy to flow everytime you touch anyone or anything. Should I go through a sintonization process again? Or shall I feel it again as long as I keep practicing?

Thank you everyone

Leah