I tell the priest my state in life (single, married, cleric, or religious), how long it’s been since I last confessed, I list the sins I accuse myself of and their frequency. If I’m not sure of the exact number of times I’ve committed a particular sin I give rough estimates with clear indication that I’m estimating (“about a dozen times”, etc.), I repent of all those sins and wait for further instruction from the priest. I say an Act of Contrition when prompted, I’m absolved, and I leave to perform my penance. All in all I’m in and out in less than 2 minutes assuming a routine weekly/biweekly confession. Even when I’ve gone a couple months without confession I’m out at around the 5-7 minute mark.
You’re doing well LISTING your sins and don’t let anyone tell you otherwise. The Sacrament is first and foremost about receiving absolution and being reconciled with the Church. If you feel you need counseling or a more intimate treatment of your sins please, on behalf of everyone else waiting in line, make an appointment.