IMO when they pop, they are in Veg which to me means growth non-flower, with that said they are seedlings, babies. I stress this, for AUTOFLOWERS this is the most critical stage.... I tend to baby them to day 7, and then I give them a boost in light while I have been building a microbe population (soil grows). After day 7 my plants usually go into what I call the angry stage and reward me with vigorous growth. Though it isn't always the case for me, right now I am struggling with a Fast Buds LSD-25 seedling, she looks like crap. I have a lot of experience and even with that it doesn't always go right, sometimes it is simply genetic variance, sometimes I goof them up as I try different and simple things, one thing for sure, it is always a journey.... I have debated chopping the LSD-25 but have so far let her live.... I hate wasting even 1 seed and a life, I Iook at her and she wants to live......