Hi Number3
(((hugs)))
I am sorry you are having such a hard time, and first off, I have totally been there with my own touchy baby. But you are way ahead as I only discovered this around 3 months :shock:
First of all, are you on a 3 hr feeding schedule?
second, 6 weeks is still very young, and you have an overtired baby on your hands. Honestly I was still nursing and rocking to sleep at this stage because I didn't know better. You are right to use pat/shh though and I encourage you to keep with it. However, you need to see it through longer I believe. I can't tell from your post but you need to make sure you are patting until your dd is completely asleep...if you leave too soon you are right that you are starting all over again. I would not take her out of the crib as much as you might want to, then again, you are starting over because the baby is like "yay! I'm getting out of this!" and then when you put them back they don't understand. It will feel endless in the beginning and you will feel like a prop but eventually it will work. Some mom's say a couple of pats and that's all is needed. Keep that goal in your mind. I would also get a chair to prop a leg on for support or to sit and reach over.
Do you have a fan or noise machine running in her room? If no, I highly recommend getting one! This made all the difference for my dd.
These are the things that helped my dd get on a 3 hr EASY- removing all toys from crib and having neutral bedding, blacking out the room (I use 3 shades still), noise machine, keeping her warm (for sleep and bath), doing the EXACT same wind down routine every day, naps are in crib only, lots of holding when awake, limiting awake time to 45 min or less, and limiting noise as much as possible until startle reflex went away.
You might not be able to do this completely if you have other children in terms of the noise but do the best you can- I have a very loud husband and cats so it was tricky- the slightest meow or cough and we were starting over. I did feel very constrained with my dd until about 5 months but honestly it was SO worth it because now she is great. Once you get her on a sleep routine I would highly recommend protecting those naps. When I make sure my dd has her naps she is an ANGEL but she is only this way because of everything else I do.
you are doing great! hang in there!