i am in the Vancouver CA area and we have 10 days of cloudy weather . Can I put my grow light on them to get them ready for harvest ? They are in the large flower stage and I’m worried they won’t be ready by Early September when I depart on vacation? I would only have them on for 5 or 6 hours during the day . Would this speed up the flowering stage as ripening sooner ? Ps have tarp if it rains . Thanks Al . Will post pic of the plants later .