A conversation between a father and a daughter

A little part of the conversation between me and my dad this afternoon in our usual Sunday call:

Time: around 2:30pm

Dad: Your exam's coming up this week right? Have u started studying?

Me: Of course not! The first exam is on Tuesday. That means I will start my studying on Monday. So today I'll be sleeping whole day.

Dad: Yes, right. Never study too early, otherwise how can u keep your memory until the exam? Good plan, you'd better sleep today.

Me: Yes I will.