Practical ethos must be respected no matter what. Otherwise, the moral dignity of the professional will be lost, and the license, of course. This is why I consider practical ethos to be one of the most important things.
Practice hours should always be agreed upon with the client. For example, in my case, I coordinate an online meeting with the client, or I send them to my site until they have new questions.
I'm not really sure that I can be called the best practitioner, but on my project I try to do my best. In my opinion, that's the best option for the goals.