I have an approved and stamped H1B visa, valid from Oct 2019 to Oct 2022, I live outside the US and because of personal issues I would like to -pause- the use or start of the visa (maybe 1 year), what options do I have if my current sponsor is willing to wait for me anytime I need?
There is no time limit as such, you can use it anytime as long as you have the job or role for the same in US. Read H1B Recapture Rule