Hi Deidre Erin
Generally speaking, if you read the instructions that come with the patches you'll find that each patch is worn for 3.5 days, irrespective of what strength they are. Thus giving you 28 days per box.
For your own safety and knowledge, it's a good idea to ask your Dr. about your medications, strength, duration and outcomes/side effects before you leave the consultation. Even if you don't fully understand what they are saying, ask them to repeat in such a way, as so you do understand.
Transitioning is such a risk at the best of times, you must place yourself in a position to accept full responsibility for your actions with respects to transitioning. As you progress, you will be asked to legally sign various consent forms indicating that you fully understand the ramifications of such actions. Now is the time to learn to ask the questions and understand the answers. Not when it's too late.
Be safe, well and happy
Lotsa huggs
Catherine