Confusion on twice daily dosing

Hi. Originally I was going to dose 10 mg daily. I understand that Cardarine’s half life is 24 hours, and thus the steady amount in my body at any given time would be 15 mg if I took it everyday.

After reading some things I am now leaning towards twice daily dosing - same time morning and night everyday. My only issue I’m not sure how much to take in order to stay around 12-15 mg of a steady state in my body. I’m not interested in going any higher than that to start. Can anyone crunch the numbers or figure out how much I’d have to take morning and night to be around there? This half life stuff is confusing.