Build a morning routine that gets you out the door on time

Help me build a morning routine that gets us out of the door on time.

Time I must leave: [e.g. 8.10am]
Time I get up now: [e.g. 7.15am]
Who's getting ready: [e.g. me, a 7-year-old, a 4-year-old]
Things that must happen: [e.g. breakfast, packed lunches, dog out, shower]
What usually goes wrong: [e.g. lost shoes, arguments over TV, can't find keys]
What I'd like if there's time: [e.g. a coffee sitting down]

Before you start, ask me up to 3 short questions if anything important is missing. Wait for my answers.

Then:
1. Work backwards from my leaving time and give me a timed routine in 5-minute steps, with who does what.
2. Build in a 10-minute buffer and show where it sits.
3. A night-before list of no more than 5 jobs that take pressure off the morning.
4. A "running late" version that gets us out in 15 minutes, with what gets dropped.
5. A short fridge version of the routine, one line per step.

If it doesn't fit, tell me what to cut or move to the night before. Don't add jobs I haven't mentioned, apart from the buffer. UK English.

Stay in this ChatGPT chat. Do not turn on apps or connectors, and do not use memory from another chat.