Our bathroom shower door leaks onto the outside floor and over time, this has caused a dry rot patch on the floor. It's not necessarily severe but there's some mild "give" and I want to prevent it from getting worse.
The flooring material is standard thick plywood (tongue and groove - I don't recall the specific thickness definitely more than an inch though).
I know the long-term solution is to replace the floor but unfortunately I don't have the funds for an aggressive remodel like that (although we're planning to do that eventually - maybe in the next 2-3 years).
In the meantime, is there anything I can do to try to patch/seal the dry rot patch and make it waterproof?
Here are some pictures: