The island in your scenario is too small be diverse enough to have fresh water, game animals, shelter. And 60 days is too long for a survival scenario in such an island where there will obviously be no resources whatsoever and you have too little tools to be able to survive successfully.

I am willing to do it if can continue to get salary and get a chance to do this RNR but your current setup is just too boring for anything more than 3 days.