Hiya Annie! I FINALLY found your thread, LOL! Hi Layla! LOVE your avatar! Mine are just about to bloom and I CAN'T WAIT! Sorry hope you don't mind me jumping in and giving my 2 cents as well...Bethany and Bear seem to be pretty similar in their sleeps, although Bear is definitely one hard nut to crack!
Ok first lemme just put down my general "rules" for toddler sleep, which aren't the same for everybody but have worked for us so take it or leave it.
1. Try to fix OT-ness with early bedtime/early nap, based on original nap times not wake times.
2. If that doesn't work (which sounds like it's not), go by stricter A times, regardless of what crazy kooky hours you are on.
3. For me, the OT-ness is corrected when she stops sleeping longer than normal. For example, if she's taking shorter naps and she's OT, and I finally start correcting it she'll take longer naps trying to catch up. When her nap returns to a normal length, then it's corrected and I slip back to her usual routine as best I can. It's hard because I have to really watch what she's doing, and can miss some cues...I found it gets corrected best if I go by her cues and less than a plan, if that makes sense. I thought she was UT the other day so was going to push her bedtime back and what do you know, she started getting fussy earlier than expected so off to bed she went, despite my plan.
Also, when sleep is off it's hard to remember to focus on the other factors of the EASY equation, so forgive me for going back to the basics, but sometimes something in the basics is where it's at:
E: how is his eating? Does he wake early just because he's hungry and wants to eat? Is he still getting anything before bed like milk or a snack? Does he eat a good lunch before nap?
A: Is he getting too much or too little activity? I remember you said once a while back he did really well after spending some good time outside. Have you been trying that again at all recently? Does he need a long time of quiet before nap? Like come home after a crazy wild playgroup and just have some super quiet time before putting him down? Does he have the same routines for nap every day and bedtime every day?
Maybe I should just stick with the early bedtimes and let him catch up some more before I try to move it forward again?
This is what I do...I think it works well...the trick is figuring out when the catch up happens. Recently actually it's been the opposite, we've had late nights and late mornings, so I've just been going with it until she catches up and we'll push her back to her old routine. Only when I think she's caught up she throws me for another loop! <eyeroll> So I think it's hard to figure out when that catch up happens - sometimes you miss it and keep trying to shove sleep down their throats when they're not tired! It's a fine line to dance...
So, yesterday, I tried to push the nap along a little and had him in the crib at 5 hours and twenty minutes. He fell asleep for his nap at 5 and forty minutes a-time (11:20). Then the one hour and 20 minute nap. So I guess I pushed him a little too much?? 
This is old news but looking at the overall picture my guess would be yes. I think Layla said this as well but when catching up with the OT, work on shorter A times for a couple of days until he's caught up and then push him back.
He took a 2 and a half hour nap yesterday!!! YAYAYAY. Then I had him asleep last night by 5 hours and ten minutes a-time. He slept ‘til 6am (11 hours and 20 minutes)!! YAYAYAYAY again!! So, I’m thinking, we’re getting there!
THEN: Today I had him in the crib at 10:45 to be asleep by 11ish for his nap (5 hours a-time). He has been singing/fussing/singing in the crib for over an hour!!! WTF??? It is now NOON!!!!!!!!!!!!!
This is my guess what happened: Getting OT he needed some extra sleep, sounds like he got two good nights of sleep and some earlier, good-lengthed naps which helped a lot...which means he was ready for a little bit later nap? He caught up a bit and didn't need quite as short of an A time on the day he sang in his crib for forever. IT's hard b/c for Bethany singing in the crib may mean she wasn't ready for sleep or it may mean she's OT and hyper. <sigh> But then it sounds like you might have it figured out in that he needs a couple more days of good sleep before he's totally out of the OT trap.
And you already know that I think tonight should be a 6pm bedtime...since you say his short naps = OTness.
Sorry, a lot of this Layla already said in just different words, I'm just pretending I know what I'm talking about.
And wanting to try anything to help you out hon, cause I love you so. MWAH.
