What I’ve found in my parish is that the number of OT readings is inversly proportional to the age of the priest. The 71 year old said “What do you mean how many readings are we doing? We’re doing them all.” The 54 year old said “We don’t want it to be too long so we’ll be doing the minimum allowed.”
This year there is no Vigil in my parish, we are to join the Mission Parish where our adminstrator is Pastor. There it’s the minimum.