A reference post rather than a discussion. Corrections are the point; I would rather this be right than mine. It is about the maintenance and discontinuation question, and it is deliberately narrow — everything I am not confident about is marked as such.
What is actually established
Extending the interval and reducing the dose are pharmacologically different. Reducing the dose lowers the whole exposure curve evenly; extending the interval keeps the peak and drops the trough. Since the appetite effect tracks the trough, interval extension tends to give you good days and bad days rather than a uniformly smaller effect, which most people find harder to live with.
The condition it depends on
The caveat that "maintenance dose" in the literature almost always means the top studied dose. Lower maintenance doses are widely used and thinly evidenced, which is worth knowing before you cite anything as established.
What I am not sure about
The question I want answered is whether there is a lowest maintenance dose with actual maintenance data behind it, or whether everything published sits at the top of the ladder. If the honest answer is that nobody knows, that is a useful answer and I would rather have it.
— matt_MKE · corrections welcome and will be edited into this post with credit