Do you contact the customs office or the carrier first?

Sorry for the basic question, but how do you actually start one of these diaries?

How do I find the national register if I do not read the language?

Is a baseline blood test really necessary before starting something like this?

Function over score. Tolerance was my main issue with quoting and replying too.

What is the first thing you would read if you were starting from zero?

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

Is a baseline blood test really necessary before starting something like this?

What is the first thing you would read if you were starting from zero?

Is it normal to feel worse before better? Nobody told me that.

Sorry for the basic question, but how do you actually start one of these diaries?