two nouns for "do it now" and "delay it to the future"

I am writing a research paper whose title is about "doing things now or delaying them to the future." To be more formal, I hope to use two nouns to represent the same meaning. It is not hard to find a noun for "delaying things," which is "postponement." However, I really had a hard time finding a noun for "doing things now". One word I found is "preproperation," but this word means expediting things or rushing to do things. It is not exactly "doing things now". Can anyone help with this? Thanks a lot.

I'll give 'base' definitions; all these also have appropriate noun forms, which I give in parentheses.

prompt: 'performed readily or immediately' (promptenss)

expeditious: 'marked by or acting with prompt efficiency' (expeditiousness)

On the other side, consider

procrastinate: 'to put off intentionally and habitually' (procrastination)

dilatory: 'characterized by procrastination: tardy' (dilatoriness)

For what it's worth, I think promptness vs procrastination has a nice ring to it…