Unless you intend to push it into the hole you need to do some shoring and support it now so you may be able to sell it as "Home to be moved" or some such later.

I have a 100 year old house an I refuse to put more money into it, it's not feasible. No matter what I've done it wasn't built with modern techniques of energy efficiency and is impossible fix.

I'd be better off to find a recent manufactured home that someone couldn't pay for and buy it from the bank; replace flooring, put on foundation and use it for 5-6 years while building it's replacement.

A builder friend says you spend $100k on the framing of a 1900 sq/ft now.