Will you have an ED/ER rotation? I'm an LVN in a BSN transition program, and my experience with both LVN and current clinicals is that getting a chance to do an IV on the med/surg floors is a matter of getting lucky. Most of the skills practice I've had - IVs but also NGTs/OGTs, Foleys, etc., have been in my ER rotation.
Also, when I get to wherever I'll be that day, I am assertive about introducing myself and asking the staff to grab me for procedures or anything interesting. (This is based on my experience with precepting people in my LVN jobs; I'm not going to drag people off their butts and convince them to care about learning the job.) Also, I see you said you spend time helping CNAs and such - while it's awesome to show that you're willing to help out, you're in clinical to learn to be an RN, not to be a CNA. If you're in a room helping with a bed bath, you may not be visible, or you may look too busy, when a floor nurse has an IV that needs to be started now. And you may not see that something is happening down the hall that you can nose your way into. I'm not saying, sit behind the desk and ignore call bells, I'm just saying, there are advantages and disadvantages.
And you also get a certain amount of luck of the draw, not just with what's happening on the floor, but who is on the floor. Nurses are people, and people are weird, are introverted, didn't get enough sleep, have a sick kid, whatever. Some nurses love to teach and precept, and some don't. (I got lucky last week and had two ED nurses pulling me every which way...I started 7 IVs before lunch!)