2 month vaccination (timing question)

Disclaimer: I do not want any opinions on our decision to vaccinate our son. It is what we decided was best for our child to give him the greatest chance of immunity against certain diseases and illnesses. No negative comments.

My son is 2 months old as of 11/11. He is not scheduled to receive his 2 month vaccinations until 12/6. But I'm confused, as he would be almost 3 months old by then. Do I need to call and schedule them for sooner? Would him receiving them later get us off track for his vaccine schedule ? Or am I fine to leave it as is? I think the girl was confused about the scheduling, as I told her I needed to schedule his 2 months appointment and later I realized she scheduled it for 2 months after his last checkup, when I meant 2 months of age... not 2 months after this past appointment. Confused ftm! Help a girl out!