There used to be a hand held (Remote) Device that would operate both a VCR and a Cable box.. You put it where both could be seen, Left both VCR and Cable box on and it selected the proper cable channel and then told the VCR to start (and stop) recording.
TV Guide (partnered with the manufacturer) had code numbers in their publication which auto-programmed this device or you could do it VCR style.
I do not know if it is still made or if it will work with your box.
SOME Recordrs (Mostly DVR's) can power an I/R Blaster device to control a cable box.. My DVR's can.. But I've never seen a VCR do it.
Time for an Upgrade I think.
Nothing like a VCR with a 1,000 hour tape that has instant access to any show recorded on it.