Hi new to this page

Hi Guys,

Any tips for sleep routines. I have been offered a job that is 4am-8am 4/7 days per week. I have been used to waking anywhere between 7:30am-9:30am unless I am poorly. I need my body clock to get into a 3am wake up routine and try and stay awake all day until at least 7:30/8:30pm to ensure i have 6-8 hours of sleep. I am an over thinker and always get plans in head and end up staying up longer than I should so also need my brain to switch off from overthinking mode too. Any help/advice much appreciated