Hi there
Sorry to see you didn't get any replies yet.
I did see your thread a few days back but didn't respond as I don't have paci experience, my DS never took one.
I would say not to re-plug, but easier said than done when you have a LO awake and you want to try anything to get him back to sleep. They can become very reliant on it as a prop, on the other hand a baby who is reliant on a paci shouldn't have it dropped cold turkey either (SIDS guidance for LOs under 6 months).
The W2S method itself does not involve use of a paci but if you feel you want to re-plug then that's your choice. There are pros and cons of the paci so if you choose to go for it don't feel guilty. you can wean it later.
4 months is prime time for the naps to go short even when a LO was previously napping well.
You might need to increase her A time as it does rapidly increase more than expected between now and 6 months. This may help.
Here's a link to A times which may help:
https://babywhispererforums.com/index.php?topic=84884.0This is also the month when you move from 3 hr EASY to 4hr EASY if your LO can manage the feeds further apart.
Often the 4 month regression lasts a couple of months and LOs are usually back on track at 6 months if not before.
hope this helps