The biggest leak is between booked and attended, not between visit and inquiry
Track the attendance rate on consultations before you touch anything else, because it is usually the worst number in the practice and the least examined.
Count it weekly: consultations booked, consultations attended, matters opened. Split by day of week, by time of day, by language and by whether the appointment was in person or remote.
Firms are routinely surprised by this figure. Inquiry volume is visible and celebrated, no-shows are absorbed quietly by whoever had the empty hour.
Once you can see it, the causes separate quickly. Slots that require a drive perform differently from slots that do not. Appointments booked more than a few days out perform differently from same-week ones. Certain hours are simply wrong for people working shifts.
Everything downstream is cheaper to fix than this. A better headline on the contact page is worth very little if a third of the people who already said yes never make it into the room.