If you don't mind reducing the total nicotine, then I would dilute the
juice with the VG available at Walmart (in the pharmacy area) blended with distilled water (85%/15%). Dilute until it tastes acceptable. You will be reducing the overall nicotine content, but increasing the amount of juice. If you want to keep the same amount of nicotine you'll have to get some to add. Welcome to the world of DIY.