Block out a day in Google Calendar so the big job actually gets done

Help me time-block tomorrow so the important job gets done.

Fixed appointments: [e.g. school run 8.15–8.45, dentist 11.30, call at 2pm]
The big job: [e.g. finish the funding bid, roughly 3 hours]
Small stuff: [e.g. emails, two phone calls, a food order]
When I think best: [e.g. first thing]
When the day has to end: [e.g. 5.30pm]

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

Then:
1. A timed plan in blocks of 30 to 90 minutes, with the big job in my best hours, split into chunks if needed.
2. A 10-minute buffer after each fixed appointment, plus travel time where it's needed.
3. One batch block for the small stuff, not scattered through the day.
4. Each block as a calendar line: title, start, end, and one line on what "done" looks like.
5. A fallback: if the morning goes wrong, which block moves and which gets cut.

Only use what I've typed. UK English.

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