Hello and welcome to BW forums
Wow you've had a lot on your plate with 4 LOs, moving countries and sickness!
From what I can gather you've been getting him back on track and using PUPD for 2 weeks, is that right? Now you are reverting to shush/pat but are getting short naps, is that right?
Shush/pat is always the go-to method, PUPD is really a last resort although keep in mind that during shush/pat you DO PU if baby is crying lots and you DO PD when he is calmer but there is no time restraint on this version during the shush/pat method and for a baby this age, you hold for as long as is needed to get him down calm and continue the shush/pat in the cot.
There is a 4 month sleep regression where lots of babies start to short nap - if your LO is on a suitable A time then it could be he is short napping due to this developmental stage.
If though his A time is short for his age and individual needs then extending it (yes even if he has already yawned) will help to get longer naps. Whilst he might be a bit OT for the nap and for a few days during the routine change, overall it would make him less OT because he would be napping better and getting more restorative sleep - the outcome is better in the longer term but yes there can be some OT in the shorter term.
When extending A times Tracy said to do anything to keep them awake that extra time, a fan dance if necessary.
then he doesn’t sleep long enough, I should try shh/pat to extend his nap all the way until the next feed time?
If you want to get into a routine fast then this is probably the best method. You are teaching LO that it is sleep time even if they are not asleep. However, patting all the way to next feed time might not work for you personally, there are many people here who have gone a slower/gentler route to get to a suitable routine. This can be for various reasons such as having other children to care for (so you just can't spend that time patting LO4), or because sitting in a dark room patting for an hour drives you insane (that would be me!), or whatever reason. So if you don't feel you can follow Tracy's method to the letter it's okay, you can still follow the BW ethos and the EASY routine.
Generally on the forums we say not to continue patting in the dark 9after a short nap) for more than 40 mins. You might like to go with that. Or for some parents they would prefer or need to get LO up right away regardless of the short nap.
she suggests patting for at least 7-10 minutes after he settles down...but at naps he usually goes straight to sleep when I lay him down or after a few pats...how long do I keep up the 7-10 minutes of shh/pat?
If he goes to sleep relatively independently at the start of a nap you don't need to keep patting this is for babies who don't stay asleep and need to be patted into the deep sleep part of the cycle. Instead I would suggest trying a Wake To Sleep method (W2S). Where you go in just before LO wakes and start shush/pat to help him transition from one sleep cycle to the next to extend the nap and teach him to stay asleep. Here is a FAQ, I suggest naps option 1:
https://babywhispererforums.com/index.php?topic=223809.0You can adapt it for your individual LO. If he only needs a few pats to keep him down and go back to sleep at the 40/45 min mark then that's all you need to do. If he needs patting for 20 mins and you have that time available to you then do that.
W2S is done in cycles, use the method for 3 days then hold off to see if he "got it". Resettle on that day if needed and begin another cycle of 3 days the next day.
You can do this for all naps or you can pick one nap per day (you might not be able to dedicate 20 mins for every nap when you have other children). if you pick one nap per day I suggest you do the same nap every day to build a habit on that nap, switching naps is not ideal.
One other thing I'd like to mention. You didn't mention his feed times but the 4hr EASY is a 4 hr interval between feeds. Not all babies of 4 months can manage a full 4hrs between feeds. Tracy gives some examples in her book of LOs who this might not be suitable for. If your Lo can't make it to 4hrly E it's okay, you can still run an EASY routine but you'd need to work out a routine which is suitable for your LO. We can help if needed.
My own DS could not go longer than 3hr between milk feeds until he was 6 months old when he had some solids between milk feeds but we still followed the EASY routine and methods, just adapted to him as an individual.
It is very helpful to us if you can record your EASY times exactly as they happen whilst getting support and you can post them in this format:
WU (wake time in the morning) 7.00
E 7.00
A 1hr 20 min (this is the full time from eyes open and awake to eyes shut and asleep)
S 8.20 - 9.00 (with a note about how you tried to resettle, for how long and if LO went back to sleep what time and how long)
A
E 10
A 1hr 30 (the total A time)
S 10.30 -
and so on through the day to
BT bed time
and include any
NF night feeds what time
NW night waking time not for a feed
through to
WU
I hope this helps - let us know if you have more questions.