I've previously suggested https://discord.com/channels/324132423636090880/1399463502933917807 but it had some problems. This suggestion aims to address the same problem I've brought up there, but in a different, preferably less potentially-exploitable way.
So imagine this; you want to get the most out of your potions/pies, so you try to wait for the moment just after your stats decay to pot back up. You look at the boost timer, see you have about 20 seconds left, glance back to your second monitor or whatever it is you're doing then glance back to the timer just to see that you've completely missed your opportunity to pot up and have to wait another 40 seconds for your next chance.
Isn't that just annoying? Wouldn't you like to be able to boost at your convenience instead of waiting on an arbitrary timer to tell you when your allowed to eat or drink?
Enter; the Preserve Prayer. Normally this extends the length of the decay timer when active, but I'd like to suggest that it also be able to immediately trigger stat decay upon being deactivated, decrementing your boosts by 1 and resetting the timer to a full minute just like if it were to hit 0 naturally. That way, instead of having to wait on the boost timer to tick all the way down, you can just flick preserve and immediately pot back up while still getting the most out of your dose.
UPDATE: Alternatively; this function can be placed on the Restore Stats prayer instead.