Sending you hugs, Sue. And then more hugs.

Soft spots in the floor - how much "flooring" is over the spot? Is it easily removed then placed back down? Often if it's something like tile or linoleum, it should come up pretty easily because of the moisture underneath. Replacing the rotted wood is a pain, but shouldn't be too, too, difficult, and is important to do before it spreads to the surrounding boards. Measure thrice, cut once.

Now sending more hugs.