newstart_MO said:

The distinction that resolves most of these threads is between what is true on average and what is true for one person.

Adding the part of the answer the thread has not reached. Start from the measurement rather than the conclusion. Almost every disagreement here turns out to be two people measuring different things and comparing the numbers anyway.

Correct me if the detail matters more than I have assumed.

The figures, for anyone assembling their own picture. One practical note: write down what you did and when, before you need it. Reconstructing a timeline from memory three months later is how people end up unable to answer the one question that would have resolved it.

One thing that is still open after newstart_MO’s answer:

How long did you give it before you decided it was working?

Dr.PeteFamMed said:

One practical note: write down what you did and when, before you need it.

Worth saying that the confident version of this is more useful to the person writing it than to the person reading it.

Dr.PeteFamMed said:

One practical note: write down what you did and when, before you need it.

True, with the qualification that this is a self-selected group. The people for whom it did not work post less, and that shapes everything we think we know.