Stopped feeling Zoom Air on my Hyperrev 2015. Is this normal?

Hello everyone,

Long time lurker, first time poster. I have a Hyperrev 2015 that I love, and REALLY loved the cushion, could really feel it protruding on both my heel and forefoot. However, lately, I have not been able to feel it anymore. The heel feels hardened and the forefoot, I kinda feel it if I push my feet into the ground. Is this normal after 10 months of use / 4 hours week ? Is this the shoe conforming to my feet? Or is my unit defective? 

Thanks,