The context for this question is a Shadow Origin Sorcerer that tries to fight exclusively within the Darkness spell created by their Eyes of the Dark feature (a feature which permits the sorcerer to see through their own Darkness effect) to gain Advantage on their attack rolls during the fight. The problem, however, is that if the Darkness effect is present, it could negatively affect their allies, especially if they're spellcasters that become literally unable to cast their attack roll spells when they can't see their targets.
So the strategy I came up with to try to counteract this effect is to follow the following plan for combat:
- Before the fight (or during the first round of combat), cast Darkness (using Eyes of the Dark, naturally) on a gemstone that the sorcerer keeps in their possession.
- Stow the gemstone away into a pouch or their pocket, "shrouding" the Darkness effect.
- When their turn arrives in combat, pull the gemstone out of their pocket, revealing the Darkness effect
- Attack the enemy (a melee attack with a rapier), gaining advantage on their attack roll (because they can see the target, and the target can't see them).
- Put the gemstone away, shrouding the Darkness effect again
The problem is that, by the strict rules of the Object Interaction rules, I don't believe this is possible, since retrieving and stowing away an item requires a full action, not just the Free Object Interaction permitted.
Is my understanding of the Object Interaction Rules, which is that it's not possible to execute this sequence of events in a single turn, correct? If it is, is there something else I could do to suppress the Darkness effect during my allies' turns?