Hi there!
Hugs for the nw's. It's hard when they are up for frequently at night.
WRT sleep training, it is tough when you are changing how you are doing things and it will take a while for a LO to get used to new methods. Depending on her temperament, some techniques will work better than others and sleep training may take longer, especially if things are not consistent. Do you know your Lo's temperament? If you are not sure, you can look at the following link.
The BW "Know Your Baby Quiz"Although I don't have any BTDT experience with reflux, PU/PD may aggravate reflux so I wouldn't use this technique if her reflux isn't completely controlled. As well, I believe some mums will pat the LO's bums rather than pat the back when their LOs have reflux. You may want to adapt the shh-pat for your LO.
WRT the paci weaning, normally I would suggest to wean it but for a LO with reflux, the paci may be of some benefit so I would keep it for the time being unless you think that she will suck her hands (I don't know if you want this though
).
Thanks for posting her schedule. Getting to a 4 hr EASY can be hard especially if there are short naps. I've noticed that your first A time is short which may be the reason she's fighting her first nap. Here are the average A times
The BW "Know Your Baby Quiz"If possible, I'd start to bump out her nap by increasing her A by 10-15 min every few days until her A is around 2 hrs / 2 hrs 15 min.
Her second A time is actually longer than the average so you may want to shorten this A so she's up for around 2 hrs instead of 2 hr 45 min.
For her last A, if you can't do an early BT, then try to have the activities all very low key so she's not getting over stimulated. Some babies do alright with a longer last A.
WRT to night feeds / nw's.... would you consider feeding her at 11 pm (sort of like a dream feed) and then do the 3:30 am feed? I'm wondering if she is waking due to hunger around 11 and then is waking roughly every sleep cycle due to this? It's not unusual for a 5 month old to get a feed around 10-11 pm (df) and then one other feed during the night.
HTH