Call the operator. You could list the wells here and somebody might be able to come up with some informed guesses as to what is going on based on publicly available details for those wells. But I’d try the operator assuming they will take your calls.
The wells should not “run dry”. They should, barring some mechanical failure or human decision, continue on a fairly steady decline that gets shallower and shallower over time. Should get lower and lower over time, but shouldn’t fall off a cliff. Over a 40 year life no well actually stays on steady decline 100% of the time, because something else happens. Pump breaks and needs to get replaced. Rod part. Tubing failure. Frac hits. Full tanks and bad roads. Can’t sell gas so pump slowed down to avoid flaring issues. Etc. Etc. Any of those things could result in less days on, assuming the days on info sent to the NDIC is accurate. And most of those things are fixable and well(s) can eventually get back on its historical decline.