Yea so you made it up like i said.
Do you think Oda is making it more complicated than that ?
Like you think Zoro will at one point say "Man i'm not at my best but at least i can fight" ?
Because if he doesn't and he goes full spring into this fighting as if nothing happened until the effect kicks in, then there's no reason to asume anything than the fact that he was all healed up, for that period of time.