Live View on LG TV When Pressing Doorbell

Hi all I've managed to pair my video doorbell to my tv via Alexa and I can get live view when I ask for it on the big screen Next step I'd really like is to have it switch from whatever I'm watching on the tv to live view if the doorbell is pressed - is there a way to do that?  i.e. a bit of an instant and fast security feature I have tried Googling and not really getting a straight answer.  Maybe via a Firestick but I'm not 100% sure...If Firestick is the answer, can I get the Firestick Lite for this (as I don't really need a Firestick itself for anything else as far as I'm aware as I have a smart tv) or does it need to be the normal one? Edited to add I've read on Amazon only the 4k version is likely to do this - any input please ref this and if it will actually work?Thank you