The way this typical plan works is you push your morning nap later and later until your child can make it until around 11-11:30 before going down for a nap. At that point, you just give them 1 nap at that time (snack before, lunch after). You're actually getting pretty close to that point.
The PP used the other technique, which is to distract child until they can make it to a decent 1 nap time (again post 11 am, but preferably after 11:30). This technique is great as long as you don't have a child who's sensitive to being OT. if you *do* have a child who tends to be sensitive to OT, what happens is they short-nap because too tired at nap time, and then they have NWs and/or EWs because they are too tired by bedtime -- even a 6 pm bedtime because of the short nap in the early afternoon.
You know your child best! My kid is VERY sensitive to being OT, so we did the short AM nap and long PM nap. But I must tell you that at this age his A times extended lightning fast! So I think we only did the short AM nap for about 2 weeks, and then we were able to move to 1 nap at noon. Also, when you first move to 1 nap they may short-nap (45-1.5 hours) for the first few days because their body is used to receiving a 2nd nap. After about 3-7 days, their body clock adjusts and then they start having the 2-2.5 hour naps that are typical at this age.
Good luck! Oh, and if you start having trouble getting a PM nap, then you can shorten that AM nap to 10-15 minutes if you have to. Teh purpose of the AM nap is to just give them enough of a 2nd wind that they can make it to nap #2 without being OT.