is that what I'm aiming for?Yes, that's what you're aiming for. It seems to be diff for all babies. For mine, he needs a full out flip in the air, for yours, looks like the radio may be the trick. Remember, you have to do it before the stirring comes (or at least in my experience). The idea is to wake them out of the deep sleep so they will "restart" the sleep cycle and add on more at the end. Then they'll get used to sleeping longer periods.
The other way ( the one where you apply pressure etc when they stir) is to "help" them get to the next cycle in hopes they will later be able to do it themselves. This one didn't work as well for my DS as he would always open his eyes and see me before I dove to the floor.
Two diff theories.
"Would you suggest that if she's waking up crying at 30mins and usually between 30-40mins that I need to be going in to 'wake' her around the 20min mark? Once I've done that do I leave and see what she does or do I stay and hold her arms and legs etc? "I would first watch her and see when her first stir is then the NEXT nap go in before that. In my example, my DS's first stir is always 18 mins past going to sleep so I need to go in before that to catch him deep sleeping.
Then you can leave and wait....if it worked then the stirring shouldn't happen at the 45 min mark b/c it resets.
What did you do today that got her past 30 mins?
Edited to say: I'm not an expert in this (I don't want to step on any moderators toes). This is just something that worked for us. We still have a myriad of other problems