Hi all!
I just wanted to share my success for overcoming the 45 mins naps. My DS was stuggling with the 30-45 mins naps since he was 7 weeks old. Like all of you, the 45mins monster was driving me insane! He is now 15 weeks old and sleeps through all of his naps 3 x 1.5hour. I've tried everything to extend his naps...but not until last week i've succeeded and this is for all of his naps! He was miserable with his 45 mins naps, always woke unhappy and crying. The only way i had to extend his naps was to hold him, b/c when i put him back down he would just wake up. Since he's a Spirited/Touchy baby, patting in the crib was too much for him and never really worked.
This is what i do:
Swaddle him with the aussie swaddle (the regular swaddle and the miracle blanket did not work anymore, he outgrew them and was not comfortable lying on the side).
Put him on the side with a sleep positionner. Since he can fall asleep drowsy awake on his own, i leave him for the first 25-30mins and sneak back in at that time.
When he starts to make noise or move between the 30-45 mins, i slowly place my hand on his back, pressing him forward with my thumb on his arm/shoulder. At first i use quite a pressure but i slowly release it when i see that he settles. And if he starts to wimper or cry, i shush him back to sleep with my hand still on his back.
It never failed, and i hope that he will slowly learn to transition to sleep himself without my help. But meanwhile i'm teaching him this way, without picking him up and holding him like i used to.
I don't know if it would work for any of you. I think that you just have to keep on trying different things or a combinations of things that suits your LO. Don't despair, they will all eventually outgrow it!