Sometimes (probably MOST times), it's difficult to foresee how a change can or cannot be helpful. Would you agree that maybe it's worth a try? And I'm sure the logistics of the care taking of husband can be worked out.

Like anything else, there are no guarantees but if your T thinks it might be useful and you trust her enough that you've been seeing her for 3 years, maybe, just maybe, a leap of faith might be in order.