I recently upgraded my service to "FIOS TV One". The Verizon technician swapped out the large ONT box in my closet for a much smaller device as well as replacing my set-top box/DVR with a smaller unit and a new remote with voice control.
I ran into an issue with my TV service going into IDLE mode after a period of inactivity.
I want to share the solution I found.
Press the Menu button on the Remote. Then navigate as follows:
Settings--> System-->Fios TV One Settings-->Auto Power Off