How should I fix a sentence which says "As X disappears, it is increasingly too late to do Y with X"? The sentence seems awkward to me, but "too late" is an adjective, so is the sentence grammatically correct?
Your sentence has a problem because "too late" is not a matter of degree. "Too late" is a binary category -- either it is or it isn't -- so it makes no sense to talk about "increasingly too late". So what is changing over time? My guess is that your real meaning is:
or, even better: