Flex Pla filament storage

Hello everyone,

I intend to use my flex PLA filament with the external loader of the printer (P2S), I heard it's not meant to be used with AMS so that's why I'm not inserting it...

Would it be advised to place it in one of the empty compartment of my AMS while it is not being used ? So that it stays dry of course, not to auto load it with AMS, obviously.

What do you think ?

Is there a better option (free) that helps me keep it dry ?

Should I even bother keeping it dry, or should I simply use it as fast as possible maybe, so nothing is left and nothing is wasted.

Thanks.