Hello
Sorry to hear about your troubles
There are a few things to be aware of around this time, that is always good to take into consideration
LOs begin their nap transitions from 3-2 naps... this means pushing their A times. In my experience recently, and of course all babies are different... when he would wake suddenly after BT PD, it was normally because he wasn't AS tired to continue sleeping at night. I realized pushing A times through his day worked. Took a few days to adjust him, and then he slept on through. Something to try.... I see he's already on 2 naps and long naps for that matter! Great!
....but, I would try and push one of the other A times to 2.15/2.30 over the course of a few days/weeks. At this age their A times are ALL getting closer to 3 hours. His last A seems good. I would do 3 hr not 3.5 as that is pushing farther out. Try adjusting his A times and see if that works! Here's a link for you to keep on hand
Average A times- BOOKMARK ME! I found that he was tired enough to fall asleep but not STAY asleep. Especially when you mentioned he was up but with no cries.
Around this time, also comes new found mobility!
crawling may start to commence!! Yay! This can cause some disruption and a few NWs here and there as well.
One last thing... growth spurts! There is a growth spurt around this time so I would make sure he's getting enough in his days and not waking up at nights to make up for it. It's not uncommon to still BF at this age at nights. Usually until solids are well established do I feel nursing can be given up at nights. Also, starting solids is common around this age and may cause some tummy troubles. Not sure if you have started but, also something to think about if and when you are ready to begin solids
.....you also mentioned you do a DF still... does he wake or do you wake him for this?
Hope this helps some. Xo!