In addition to the Michael Borgwardt answer.
A way to untrain the habit of speaking too fast or provide with too many info is planning the speech as if you were to speak to children or to your wife. Or anybody else unfamiliar with the subject.
When I have to do so, I force myself to sum up every subject of my script in no more than 1 or 2 phrases. Each phrase must lead to the next subject as if it was a natural process.
If you ever have spoken to children, you probably realised that they get distracted quickly, unless you speak to them with the right cadence and with a fairly plain language.
You will know when they need more info when they do what they do best, to ask Why, When, How, Who or What.
The same applies to the standups. Whoever needs more details, will ask you for them. Then, if you don't feel able to respond with a short answer, tell him/her to wait for the standup to end.