Being a 4 year-old fork, I would do a full servicing of it. Rebuild kits is likely under $25, and $40 will get you all the damper and lower leg fluids you will need for a very long time. Only special tool needed is snap-ring pliers.

At the bare minimum, do a lower leg service ASAP, as this is the most critical (and more frequently needed) servicing. And pretty easy.

These forks will perform like new indefinitely if you do regular maintenance (especially the lower leg oil changes), or will be toast in a few years if you don’t.