MTE hit the nail on the head with his concise reply, "It depends on the situation and your plan."Quote from randy33:
One possible rescue plan is to sell another credit spread on the opposite side. For example, your credit call spread is losing money and approaching in-money$. Sell a put spread for same month same security. The idea the credit$ you get for the opposite spread will help pay for the loss on the call side. Something to consider. There are many downsides to this obvisously one is you are getting deeper and if the stock is highly volatile you might get ding on both sides. A lot of risks you have to consider.
Your suggestion is fine if everything moves in your favor.
You can also roll. Or add more long legs. Or trade some underlying against the spread. But don't get caught up in breakevenitis. Don't adjust a position to something that you wouldn't put on today.