Bec, I appreciate the questions.
It's helpful hearing your experience and I appreciate that you're paying it forward!
We did shush/pat with pu/pd at bedtime and while I was sitting there crying and wanting to die, at the end of it, my husband said, "wow, that wasn't bad at all." I am soft, that's for sure. It took about 30 minutes and there was certainly crying but we responded every time and it wasn't really hysterical.
In terms of what I am looking to achieve: I want her to get back into sleeping at night. I don't expect any crazy 12 hour stretches, but I used to get at least 4-5 hour stretches (often 6-7) and she was a well rested, happy girl, ready to learn and explore during the day. Since she started waking every 45 minutes at night, she is an OT mess during the day. Not crying, but not really able to learn and explore. So I want for her to be getting a good night sleep and I feel like she is waking that often because she doesn't know how to put herself back to sleep as her cycles transition.
I also want her to be getting good naps. For at least a month now she only takes 30-40 minute naps. They are not restorative and she grows more tired throughout the day. Last week she was napping mostly 20 minutes and refusing to let my nipple out of her mouth. So I want for her to be able to get restorative naps, and I want for myself to have time to refresh so I can be a good mom to her. It's hard to stay grounded when I don't get any break. I also have work to do.
I am not putting her in a new environment, it's our bed, where she always sleeps and naps.
She lives OT because her naps are so short. I used to sneak 5 naps a day in in order to get her the required amount of nap time. That meant she was napping after being awake for an hour only. But here on this post it was recommended to wait 2-3 hours and that is working, she is accepting naps more readily. But today she got a total of 62 minutes sleep--no joke. So by bedtime she was an OT mess who didn't even really want to nurse. My husband rocked her pu/pd-ed and shusshed and patted.
Our routine is: get up somewhere 6-7, nap two hours later in family bed (I used to nurse her to sleep now I did the whole thing), etc. we play both in the bedroom and downstairs. Playing includes floor time, and lots of cuddles, we sing, dance, read. She sits in a bumbo while I cook. Stuff like that. I don't go out much honestly. I do try to expose her to bright light when she isn't sleeping, but I live in Cleveland Ohio (US) where it is extremely dark.
I did try to resettle her the first time. Both times she woke up today (she only napped twice, refused the third because she was too stimulated from the whole thing) she looked like she would go back, unlike in the past when she wakes up absolutely wide awake. I shusshed a bit and the first time tried to nurse her, but I didn't give it too much because I just felt so frazzled from the whole day. I could do more to get her to go back--suggestions?