Just making sure I haven’t failed to understand this for the past couple of years – you can only use one Treatise a week via crafting order, but there’s no way to catch up for any weeks you missed, right? (i.e. you can’t just make more Treatises now and use them for every week you didn’t use one, correct?)
Correct, you cannot catch up treatises like that. One per week.
To add to that you can only get two different treaties a week in DragonFlight for what ever profession you choose as well. So for a week you can get two in treaties in Khaz Algar and two in DragonFlight