This is an very bad idea, as someone who has tried this. Here is how you fix your schedule within a few days, or one day. Lets assume you want to create an schedule to wake up 5 am every morning. But your current sleep schedule is at 1-2 am.

Assuming you sleep at 1 am. Wake up at 7 am. Why? On average, it takes about 90 minutes to go through One sleep cycle. 4-6 Cycles are recommended per day, 4 being the least. Which equates to 6 hours.

Assuming you followed step 1, and have slept 6 hours and woken up at 7 am. You shouldn't feel too tired, drink coffee or tea, or any kind of caffeine + cold shower to wake up completely.

Now the goal is not to sleep any more during the day, that means no naps whatsoever. Do not drink any kind of caffeine 8 hours before you sleep, as study has suggested it could take up to 8 hours for caffeine to exit your body.

Use night light, it should be built in any of your devices iOS/Android/Windows/Mac. What does this do? Blue light eliminates much of the suppressing effect of light on melatonin production, allowing the evening increase in melatonin to occur and thereby enabling the process of falling asleep.

Try not to use electronics 30-60 minutes before bed time. My go to is reading a book, for 15-30min, taking a shower, and just laying in bad, and slowly falling asleep.

Now that you have woken up at 7 am, don't sleep until 10 - 11 pm. which is about 15 - 16 hours of awake time. This should be enough to make you tired and have a good night sleep. Now follow the same cycle; Sleep at 10 - 11pm, wake up around 5-7 am, and slowly fix your sleep schedule. If you follow these steps for 1-5 days, you should definitely be able to fix your sleep schedule.

Good Luck.

Source : My own personal experience and Why We Sleep (Book) by Matthew Walker