A while back I found a video on flooding senerios to understand what to do. I spent time studying the bible, with God and thought greatly a long fun. There is 5 things we have to prepare for in this situation. First Drowning and our stuff.
Deadly fumes after and other melting waves from refreezing and melting and fumes. It said in the bible that Noah had to seal his ark so it wouldn't breath the air for 40 days. The deadly fumes caused by death of organisms can be fought by some type filter to breath the air or some type of cure to the fumes. We could also build big ships that are sealed or build long wear floating containment suits you can eat drink water from with some type floating containment tent you could seal off you build for food for people to use that is sealed off. It says in revelation to go to the mountains and we could also build sealed rooms in high places but I can't predict how high how long and how much food and water we would need on hand. We also afterward find the amount that would be resended or flood again if things melt freeze remelt and cause another deadly fumes cycle potentially until the earth restablizes itself. The flood didn't cause gravity changes to the earth. This could also be a problem we could solve if the poles shifted quickly and cause glacier or Antarctica to melt. Then we might have earthquakes, sunammes,high waves hit the shore,flooding fumes melting and remelting then more glaciers due to more or less ice. Earthquake proof high places sealed off that can grow food preserve livestock people seeds, varieties of food and supplies resperators that are sealed off from fumes. They should make oxygen maker resperators too for any conoravirus or other places that may happen from the dead. I hope these things don't happen but we always could prepare.