HI lewismummy. I have read many of your posts and my DS and yours are sleep twins (along with lesorl, RACHPEM and a few others!). Very easily OT and inconsistent right?
I would insist that he take one nap at the nursery so you can avoid such a long stretch before bed. And 7pm is waaaay too late after waking at 11:15am. In my limited experience with this disaster called the 2-1 switch, an early bedtime for us has been the key to my success the last 2 weeks. I was soooo fearful of an early bedtime as he already goes down as early as 6:30pm but I have tried 6pm or earlier a few times only to have amazing success. I was shocked and so skeptical but it works for us better than the catnap. If you decide to do it, it has to be ultra early like 6pm or before to work. My DS if has an OT nap and I put him to bed early at 6:30 he wakes at 5:30 with still not enough sleep. It's not the early bedtime that causes the 5:30 waking, it's the OT. He would wake at 5:30 if OT and a 7, 7:30 bedtime. KWIM? But 6pm, works the opposite, wakes at 6am or later after an OT/short nap. Go figure. Can't hurt to try!
Today went like this
6:30 am wake no NWs 11.5 hours! Yippppeee
11:38-1:29 nap! Almost 2 hours
7pm bedtime. I am so excited I could cry *anti-jinx*
But now I am fearful of a super early EW tomorrow due to soooo much sleep in the last 3 days. I will fall off my chair if he sleeps until 6am.