Thank you both.
Shiv - I am not sure if we are passed the GS or before, but he is for sure not hungry. He is only on formula and often doesn't finish his bottle, he takes around 150ml each feed. I also though he might be waking up hungry at night, but he doesn't - he settles again, sometimes for a couple of hours.
We don't really have an EASY right now, as I really don't know when to put him for naps. I feed him 7:00, 10:45, 14:30, 18:15 and top up at 19:30, 23:00apx - DF.
My biggest problem is that I don't know how long his A time should be, what is suitable for a baby his age.
Today I have managed to extend both naps but with AP. He will only sleep longer than 40 minutes in his pram, the bed is hopeless and if he is outside he will sleep longer. So as soon as he woke up today from his 40min nap I took him outside and then he has a proper nap - no problem to fall asleep and sleeps long. I want to stop with AP, but don't know how.