N.S.
Hi there, I am trying to relate your story to my own when my son was that age. First off my son still had naps every 2 hours at that age, and they lasted 30-40 mins. I should mention that he showed tired signs and that is why he napped so frequently. His naps did not consolidate until 9 mos old. He also woke up very early until about 11mos old.
Is this behavior over several months? Or is there a growth spurt in progress? Could he have a milk allergy or food reaction going on? I think you are doing a lot of things right and it may be time to talk to your Dr as he/she may ask the right questions to get to the bottom of your situation.
I perhaps he is hungry and that is leading to his repeated attempts to rouse you? Is he eating well during the day?
As far as falling asleep on his own, maybe start with getting him to sleep on his own at the beginning of his night. Start with that and then proceed to naps. Maybe the way you are placing him in the crib is waking him up at naptime. Is he cozy and warm and then the crib is chilly? Are you watching your baby for cues that he is ready to nap, maybe you are waitiing too long and missing his sleepy window ( ie , moving into the over tired state)?
Concerning his early wake up--have you been pushing back in 15 minute increments to see if you can get a later wake up.? (ie, have the increments been small?) At his age, you might not get more than so many hours at night
I know you are sooo tired, hope something I said helps you sort out your situation.