You're not doing anything wrong - J just doesn't come with an instruction manual
With the 2 to 1 switch, there's 2 basic approaches:
1) push morning A time out so am nap gets later; limit am nap to 45 min, 2nd A time is shorter than first, pm nap is the longer nap
2) pushing morning A time out so am nap gets later; let them sleep as long as they want for that nap; pm A time then is not shortened, offer a catnap later in the day
In both cases, the 2 naps will eventually meld into 1. Also many mums do an early bedtime if one (or both) naps is not good. And while going through the switch, it's really normal to go back and forth between 1 and 2 naps.
What helped me was figuring out how much total day sleep Abby needed (min of 2.5 hrs) and night sleep (min 11.5). Also, she HATES being woken from a nap, so after a week of trying option #1, and having her only take the short am nap, I switched to option #2. Depending on how long she slept for her first nap, I'd know how long to let her sleep for her 2nd nap (you just do the reverse if doing option #1) and whether or not to do an early bedtime.
So I'd say to keep pushing that morning nap out - do 15 min every 3-5 days. Then based on what works best for you and your bub, either limit that am nap to 45min and preserve a longer pm nap. Or do the reverse. Figuring out the 2nd A time depends on how long that am nap is. If it's short, then the 2nd A time needs to be significantly shorter than the first. At a year, most bubs are doing around 4 hrs of A time, for Abby, once she could make it to 5 hrs, I was set with 1 nap.
Here's a couple links that you may find helpful:
http://babywhispererforums.com/index.php?topic=95670.0http://babywhispererforums.com/index.php?topic=41952.0http://babywhispererforums.com/index.php?topic=129650.0hang in there!!! You can do this!!
hth
michelle