I've known several former LPNs that got their ADN and I think you will do just fine because of the years of experience you already have as an LPN. Just keep an open mind in whatever your new job is after graduation, listen to your preceptor so you learn how they like things done in your department, and remember that you have additional responsibilities now that you're an RN. Congratulations and best wishes!
Have you given any thought to doing an RN to BSN or Masters program online after you start work? It should be something to consider