Casting a stressful Wish has dire consequences, including a Strength reduction:
The stress of casting this spell to produce any effect other than duplicating another spell weakens you. [...] In addition, your Strength drops to 3, if it isn't 3 or lower already, for 2d4 days. For each of those days that you spend resting and doing nothing more than light activity, your remaining recovery time decreases by 2 days.
The Greater Restoration spell can normally be used to cure an ability score reduction :
You can [...] end [...] any reduction to one of the target's ability scores
Is the Greater Restoration spell strong enough to undo a Stressful Wish's Strength reduction early ?