Behest

[KiniRyris]

Behests give different amounts of exp based on the time it takes to finish it, and the number of times that certain behest was completed, within a certain amount of time. Say you do a behest at a completely random camp, you're more likely to earn a larger exp payout, compared to a more popular camp.

My guess would be since you recently had done that same behest, the exp count was lowered.