Do you mean, "If you HAD to retire on ONLY $200K, what would be your strategy?"
Or, "If you had $200K in retirement savings at 41, how would you proceed?"
If number one, then the only viable option for receiving enough income would be real estate investing.
If number two, I would keep saving.
You didn't mention a spending plan. If I were asking either of these questions, I would be exhaustively analyzing my spending and attempting to reduce it.