Still a newbie myself, but regarding missing appointments, only take on 2 jobs per day, one am and one pm, until you get experienced enough to be able to guess how long each job will take. I did one last week,and estimated 2- 2:5 hours for it, I had it done in 2. Another way of saving time on a job, only take your vac,sprayer,and agitator in to the property,with the solution or powder you plan to use as your pre spray. After you have vacuumed,pre sprayed and agitated the carpet, take your equipment out,and bring your extraction machine in, and prep it for work, all the time you are doing this, it gives the carpet it’s “dwell time”, for the pre spray to do it’s job.
After rinsing and extracting, you can put your air mover on to start drying the carpet, while you empty the machine, and put it back in your van.