You can obviously still trade out of it pre expiry but you’ll still suffer a big loss. If you start heading towards either of your breakeven points obviously you will lose on the delta. You’ll then still be at points where you’re short vega - on the moves required to get to those breakevens vol will have popped giving you another loss on that.

Selling condors can be a useful strategy as part of a larger options trading book but that is when delta hedged for the convexity play e.g. sell the condor, collect theta and put yourself long the downside tail through the bottom put you buy. But outright selling of condors which you advocate here is either a bit naive or you haven’t really understood the spot/vol dynamics.