Thanks for posting your routine
I think she might be bit overtired, which will be making it harder for her to settle herself. 2 hours awake time is what most 5 month olds are managing, at 3.5 months I'd say try not letting her be awake for more than 1.5hrs after a LONG nap (1.5hrs plus), or 1hr-1hr15mins after a short nap (less than an hour). That probably means you'll have 4 naps most days - 3 x long ones plus a short catnap.
OK here's the info on shh-pat. This is long! Is she swaddled? A good swaddle help, as does white noise. Also make sure you have a consistent wind-down routine in place, it doesn't have to be much, just 5 mins before all sleeps where they same things happen in the same order, so it signals that it's going to be sleep time:
http://babywhispererforums.com/index.php?topic=64277.0Put your baby in the crib, turn her on her side (I used a rolled baby blanket tucked against his tummy and thighs to keep him from rolling back), and begin to pat her back - firmly (not hard) in a 'tick tock' fashion. I used to imagine the rhythm/pace of a slow, steady heartbeat. You also want to make a loud, "Shhhhhhhhh Shhhhhhhhhh" noise. If after a while those two things don't seem helpful, you may need to experiment - Stan didn't like his back patted, so I patted his butt. Or you could rub the back, or just rest your hand on her back, or jiggle her in the crib. The important thing is that it is something that you can do gradually less until you stop. (ie, if she is in your arms, you can't 'gradually' put her down, she is either in your arms or in the crib). Also the sound, if she hates 'shhhh', try humming, or talking softly - find what she likes.
So here you are doing shhh-pat, or your variation of it. If she starts crying, pick her up, hold her against your shoulder and keep shh-ing and patting until she's calm. Then lay her down and keep shh patting. If she starts crying again, and won't settle, go ahead and pick her up again, keep shh-patting all the time. Once she's calm in the crib, keep going for a good 10 minutes after she's completely settled. Gradually, gradually, quieten and slow your shhhing, then stop. If she cries, shush again while patting and pick up if necessary. Eventually you will get to the point where she is settled in the crib and you have stopped shhh-ing. Then you gradualy slow down the patting over a minute or two, make it slower and lighter, but keep patting until she is asleep. Stay beside her in the crib - you may need to keep patting her until she is in stage 3 of sleep, ie more than 20 minutes after she first settled. Or you might just need to keep your hand on her back.
This is how to help guide her to sleep, without accidental parenting.
When you suspect she is sleeping, you can gently remove the front rolled blankets and let her gently move to her back. Personally, I would tend to leave Stanley sleeping on his side, and after he stopped being swaddled on his tummy, but that is your choice.
The key is not to stop just because she has calmed down, keep it up. And stay with her, don't leave, until she's melted into the crib!
Now, it's true this can take a long time. If she is crying really hard, just remember this is the only way she has to tell you that she doesn't want to sleep in her crib, she wants to sleep in your arms! If 40 - 45 minutes of shh-pat have passed at nap time and she is still not asleep, take her out of the crib, feed, change her nappy if necessary, and try the nap again starting right from the 4 S's. If it's bedtime or the middle of the night - keep going until she sleeps.
This sounds so overwhelming, but it's really OK once you get into it - for me, I always felt better if we had a plan. With shhh-pat you can help her less and less, stopping before she is asleep and letting her put herself to sleep.
I hope this is helpful to you
