I am getting 4 hours of sleep a night and then 4 hours of napping time during the day. That’s not a good approach but I’m working FT during the day to fund my s

I am getting 4 hours of sleep a night and then 4 hours of napping time during the day. That’s not a good approach but I’m working FT during the day to fund my startup venture. My job requires me to wake up at 2:30am and be at work for 4:15am. I’m usually done by 12:45ish and I then need to nap because of the lack of sleep . So it depends really but I would love to have 8 hours in a go.