Curious about 1/3 dose

Hello. Does anyone know if taking only 7.5 mg (0.3 ml) will do anything? I had side effects at 12.5 mg (0.5 ml) so I lowered it but just wondering if it’s still going to be helpful or if it’s pointless. I’m 26, female, around 5’5 (164.5 cm) and 135 lbs. I exercise 3 days a week usually lifting or doing machines. I have been taking this dose of Ostarine daily for 1 week and before that was doing 0.5 for about a week (yes very new).