You do NOT need to complete the full hour at first.

Here’s a smart approach:

Option 1 (Very beginner)

Practice only the first 25 minutes of OTF (until 17:40 water break).

Option 2 (After 2–3 weeks)

Go until the second water break at 18:00.

Option 3 (When ready)

Complete the full session.

Even 2 sessions per week will create progress.

3–4 sessions per week will accelerate your coordination and endurance.

Remember:
Short and consistent beats intense and inconsistent.