Can exhausting talents only be done during the character's action phase, or at any time, as a reaction for example?

Does exhausting a talent need to be done a a manoeuvre?

The reason I ask is because my thief has Quick Wits. The idea I wanted is to be able to use Improved Dodge, then be able to use it again right away by using Quick Wits to remove the recharge tokens.

It takes a maneuver to slot a talent, but none to use it as far as I know - so it should work.

..and the recharge is 4.

jh

... unless it is passive "your action gains: [boon] +1 damage (for example)"

or

stated otherwise "once per session/act/encounter/..."

... unless it is passive "your action gains: [boon] +1 damage (for example)"

or

stated otherwise "once per session/act/encounter/..."

But then it does not say "Exhaust"