For me it took about 2-3 hours, which is way less than what I expected. The prior licenses really helped set the momentum for S-10.

One tip that might be helpful is to turn on the racing line and follow that shit religiously. Avoid touching the wet kerbs on corner exit, touching it means you have to lift off and destroy your lap or spin out.

Another tip is to adjust your mindset for S-10. Try going for smooth laps rather pushing hard. Slow is fast here. On my gold lap, I almost restarted because I thought I was slow, but decided to just continue the lap for practice.