hi! i started in february as well. we get 14 weeks in total. i guess the best way to do it is use your resources. look things up, check dosages in the iv med book, ask questions of your fellow employees (not just your preceptor), and take good notes to study when you get home.
also, i know in my program that if by the time of orientation that you don't feel ready, you can ask for a little more time. meet with your charge or manager and make sure to discuss your feelings...that you are understanding a lot, but that you have certain concerns. do it now before you are put out on your own.
also, talk to the other new grads. see how confident they are feeling, and see if they have any good advice for you. that can be invaluable. because really, if you are overwhelmed, so are they...and they can tell you what they've been doing, learning, reading, charting...to get through it.+
after preceptorship, when you aren't comfortable with assignments, make sure the charge knows that you will probably require a little back-up, like if you are getting a fresh post-op scheduled or if your kid is crumping. usually everyone likes to help the nurse with the sickest of the sick kids.
call pharmacy with questions, bring a calculator for titrations, write down the specifics about PIE charting that you are having difficulty with. study up on the strange pathophys/policies and procedures. yes it is your license, but there are things you can do to feel more confident up until the end of orientation.
oh, and another thing....have your preceptor write a critical criticism list...things she senses you are having problems with. ask her to go through them with you when you guys get time. keep a log of these things to work on, and ask her to update you when she sees that there's something else about your charting or whatever that needs to be reviewed. ask her to be honest with you and tell her what it feels like you are missing. your preceptor wants you to do well, it reflects poorly upon her if you feel like you aren't ready.
anyway, these are the things i'm working on as well, and these are the ways i'm addressing my concerns. we're going to be alright, we just have to stay calm, confident, humble, and ask when we need help.
let me know how it goes!