Use the first two minutes to write down the purpose of the conversation. Choose one event, the effect it had, and the outcome you hope to agree on. Separate facts from interpretations. “The update was late” is a starting point you can check; “They do not care” is an assumption that can distort the whole conversation.
Spend the next three minutes drafting an opening and saying it aloud. Use the first-30-seconds structure to connect observation, impact, request, and invitation. If a sentence is difficult to say naturally, shorten it. You need words you can use while listening, not a polished speech that occupies the entire meeting.
Use three more minutes to consider two plausible responses: agreement and disagreement. Practice asking a clarifying question in each case. If the other person says the deadline was unrealistic, ask what information was missing when it was set. Preparing a question keeps rehearsal from becoming a fantasy in which the other person follows your script.
For the final two minutes, note your opening, one question, and the decision that needs a follow-up. Stop rehearsing and leave room for the real conversation to unfold. When you cannot find a suitable opening, adapt one of these five examples rather than starting again with a blank page.