Here is a story about my childhood.
Every morning during my school days I was dragged out of my bed at 6.30 am , given a bath and hair oiled and sent to school to attend at 7.30 am. I HATED IT!!!
The point I want to make is, it is not really important to wake up in the morning, the phrase “Early bird catches the worm” is a medieval quote and not relevant to our times. During medieval times, there was no electricity and people had nothing to in the late evening so they went to BED early and woke up at dawn, continuing to do so in the INDUSTRIAL AGE, where a person had to reach the factory before the bell rings.
The whole sleep cycle was invented for people to work and be better in factories assembly lines. So unless you are a working in assembly line, there is no need to wake up on time.
So the question to ask PARENTS is
Do your parents want you work in factories when you grow up? Is it the reason they are spending all their HARD EARNED money on your education. If the answer is NO, tell them to leave you alone and let you sleep it out.