Not working properly - Olight PL-2 Valkyrie Rail Mounted CREE XHP35 HI LED Weapon Lights

I’ve had this light for about a month now. I’ve had to change the batteries to the light three times. Whenever I put a brand new set of batteries in it it will last about 5 or six days before completely draining out. I’m not using the light in a operational setting so it’s not being used at all but I will check the settings everyday to ensure it’s working and around day 5 or 6 it’s completely drained.