I know it's best to go to sleep every night at about the same time, and wake up at the same time too. But I'm at university so I have to get up at 8AM on mondays and tuesdays, but much later on the other days. Is it ok to get up at 8 on mo. and tue. and let's say 9 on the other days?

Or will this be bad for my potential to have an LD?