Written confirmation email after every phone call. Cheapest insurance there is.

Test one thing at a time. It feels slower and it is the only way to learn anything.

Following this because I am in the same place and have no idea what to ask at the appointment.

Log dose, time and sleep. Ten seconds a day and it turns the anecdote into something you can look at.

You are not imagining it and you are not being difficult. Document it and take the document in.

Photograph everything before you open it. Ten seconds, settles most disputes.