Reading your message made me wonder too. I've been ssh/patting my 12 week old literally since birth, and I too still have to do it for every sleep. He has just started to do the 45 min nap thing, so after the initial 20 min, I have to go back in 25 min later to start again! He is now sleeping through the night though, so I'm counting my blessings, but I would love to just be able to put him in his cot and let him fall asleep.
Hopefully there is hope, and things will get better. I wish you the best of luck!