Get 7 hours of sleep per night

Cut the nightly distractions.
An hour before bed, cut off the Netflix binge or endless social media scroll by setting a timer or having your phone block these services at specific times. You could just also simply turn off your devices.

Reduce 15 minutes of your current sleeping time until you achieve your desired sleep cycle.
If your sleep cycle is totally disrupted, work slowly to re-establish it. If you want to go to bed at 10 pm but usually go to bed at 12:30 am, go to bed at 12:15 am instead and take 15 minutes off each day until you reach 10:00 pm.

Keep your sleeping time consistent.
Go to bed at the same time every night once you nailed that sleep time you want.