If you haven't already sold your ALTs simply hold if your project is decent. If the project has no future sell and buy into a decent project. This is all you can do to recover your loss without putting in more money. It will probably take a couple of years to recover your loss!
Some ALTs will never recover from this crash!
It is an ugly situation!
I have bob token and it was worth 200 dollars. I hold it till 1 year. But instead of rising up, it goes down more. I don't believe that it goes up eventhough you hold it for half a decade. Instead, buy coins which have the potentials to grow and have developers which have eagerness to be successful. If you buy that kind of coin, I assure that you will gain profits even in 3 months only.