To test whether you need to water check this post out
skewer-use-for-watering-of-orchids
Also, you can mist the air roots if you decide you want to keep them going. Be careful though to do this in the mornings allowing time for them to dry. Mist the roots until you see moisture bead up since the velamin (root covering) will act as a sponge to absorb the moisture.
Also, watch those aerial roots in that they will "stick" to things including nearby pots and they are hard / impossible to detach sometimes without drastic action.