An update - not sure where we are at currently - had slight improvement but still short naps. Got him through the 20 min jolts, can sleep through this now - have upped his activity in morning (jolly jumper for a bit and lots of rolling around the floor). Still waking around 25/30/35 min mark, he's def teething, waking up sore but meds don't seem to help (using pamol and also ibuprofen). Have started sleeping him on his tummy and he settles quicker and if I get in there at the right time I can ssshh pat him back to sleep, but he is very jerky around 40 min, then 60 min mark, basically every 20 mins he will shudder or start moving his hands, which then wakes him up.
We have changed his reflux meds as ranitidine didn't seem to be working anymore and putting infant gaviscon into his bottles so that has helped a lot with the spills.
Still not sure why he is waking up at this time into his sleep, his AT has gone down slightly 3hr 15 mins, due to extra physical activity.
I am thinking its a teeth thing but he is 9 months on Tuesday so we have had a month of this.
Then to top it off 3 nights out of the last week he has got very upset at bedtime when we leave the room, fine if we come back in. I have been sitting by his cot till he drifts off - SA?