hey Christen10!
glad you were able to start a thread ... about your problem, ask your apt manager! it doesn't hurt to ask ... i mean if you are going to be with your puppy all the time and training and stuff ... hopefully the apt manager would understand. just have a talk with him/her, you never know .. and maaaybe to show how willing you are, if the apt manager still hesitant you could always offer to put a deposit down for any potential damages (carpet and stuff). i know apts that allow pets usually have an extra deposit required ... so that's always another option/incentive to the apt manager to allow you to have a little yorkie
goodluck!!!