Disable CEC on your blu-ray player/recorder device whatever it is so it doesn’t turn off when you turn the TV off. It might also be called “HDMI control” or something similar.
At any rate, I’d expect a PVR to automatically “wake up” at an appropriate time, if you’ve set the recording properly.
I’d also expect that your PVR records to the HDD first, and then you tell it to record what’s on the HDD to the Bluray.
You might want to actually provide model numbers, and explain what you’re actually trying to do, how you are doing it, what discs you are using & etc/etc.