Do you refrain from ejaculation for a certain period of time before a session (like one day, 3 days, etc)? Do you find that this enhances your enjoyment of the session?

Yup. I usually wait 7 to 10 days between Sessions seeing my Provider. It does enhance the Sessions. Well for me anyway.

I would jerk off about an hour before a session to avoid coming  after ten seconds.

Today, I wait a week.

It's a factor of time and wear and tear on the body.

See what works best for you.

I am well-hydrated, get extra rest, and drink less alcohol so that I can be at my best.

I like to go a week and recommend that during that time you also avoid porn.