Zones can belong to more than one Fixed schedule.
What I did when I put down some seed (flowers, but same idea) was to set up multiple Fixed schedules: one at 8 am, 12, 2, 4, 6, for 2 minutes each. It was in a shaded spot, so didn’t get much sun until like 1 pm, hence the gap in the morning. And you can set an end date, so you can taper off the watering by ending one run (like the 2 pm one) while keeping the others, so that the little plants get used to having to grow down to reach water.