The 45 min naps weren't really 45 mins. I did get her to go back to sleep (by swaddling and patting) so she took the regular 1.5 naps, just with a wake up in the middle. This has been my routine since extending naps. My MIL was still in, playing with her and keeping her up, so she was OT for both naps that day. She had gotten up at 6:15 and didn't go down for naps until 9 and 1.
Yesterday, after MIL left, I put her down for both long naps when she was ready, rather than waiting, and she slept through both. The evening catnap, I swaddled just her bottom half, laid her in her crib and picked up her room while she fussed with occasional cries. I patted her once when her cries got louder, and after a bit more fussing, went to sleep on her own. That was nice.
Last night, however, was the night from Hades. Previous nights have been better. I had been leaving her arms out, but with mittens on, and she's slept OK until 3:30 or so. She's learned to pull off her mittens with her teeth, though, so last night I left them off as I had during catnap. I was putting her to bed at 6:40, and she didn't go to sleep until 8. She screamed and screamed. She was awake every hour after that. I tried just to let her fuss during the night (not CIO, just whiny with a few cries in between), but she never would go to sleep without me going to her. What a night. My DH is trying to invent all sorts of ways to keep her swaddled (double swaddling, swaddle then bag, etc), but I think that's just going to prolong the problem.
Unfortunately, my DH has never been really supportive of THE BOOK, as we call it. After trying to put her to bed for 40 min last night, I was starving so my DH took over, something I never do, because I know changing people can be stimulating. Of course, she started crying louder and louder, and when I finally checked in he was jiggling her up and down! I booted him out of there and she immediately settled down. He's still convinced this morning that jiggling her was what settled her down. Of course, I know she settled down because I went in there and rescued her from him. So, I'm sure she was OT all night.
Obviously I can't depend on my DH to help me wean from swaddle. Now that MIL is gone, I can fully commit to it. She's asleep for first long nap now, arms out, no mittens. I hope you're right and it will only take three days. I'm going to go take a nap now, too!
Thanks.