I was having some issues with how I should start counting my flowering days at first bud sites or flip (12-12)? I have a 9-10 week strain and a 10 week strain I'm finishing. It took me 10-14 days to see first bud sites. Im at day 65 from flip and 55-59 from first bud sites. I watered them with a light feeding, but not a flush two days ago. When should I start flushing them? These strains are new to me. I've never finished them before.