How do I get more deep sleep?

Hello, I recently got a Galaxy Watch that is tracking my sleep. It seems that my deep sleep period is very low. I’m not sure if this is an inaccuracy in my watch or if I’m actually only gettin around 10-30 minutes of deep sleep. Is there a way to increase this or is this just how I sleep? I currently sleep about 7-7.5 hours per night I don’t drink most nights and live a generally healthy lifestyle. Any suggestions would be appreciated. Edit: I should note that I have 250mg of caffeine when I wake up at 5 am and another 250mg around noon every day.