Feeding and watering my autogrow

I’m currently one week into my first ever self grow. I’m growing northern lights as well as sour Diesel. After 6 days in my potting soil indoors (for now), soil (I’m using is fox farms happy frog) I’m wondering about food and Fertilizer as well as soil PH.
My questions are as follows: when do I start feeding them? I have foxfarms big Grow plant food, foxfarms big Bloom plant food as well as foxfarms tiger bloom buds and bloom fertilizer. I’m currently using the big grow mixed in the water making the ph around 6.4 which is supposed to be pretty good. I’m not sure if that’s good and where I go next as far as continuing to feed them with big Grow and or when I would move on to big Bloom as well as when would I need to add in the tiger bloom fertilizer? I was also wondering if I need to check the soil PH? I live in LA where its about 78 average temp with some hot 90-100 days, when can I safely move them from indoors to an outdoor grow? Lastly, watering: I’ve read that it can be easy to overwater so any recommendations for a current indoor grow of one week would be great, at the moment I’m just using a spray bottle when the soil looks dry
Thanks for any info

At 6 days, a little young to add nutes IMO. I grow indoor and photos. Let others chime in. Most experienced growers add nutes, after the first 2 leaves are browned out. (Cotyledons)

You have a couple weeks before you have to start feeding them. I usually watch the leaves. When they’ve depleted the nutrients in the soil, the leaves will start to lighten up. I used the FF Trio for this first auto grow and just harvested yesterday.

It’s a bunch of outdoor guys on here. Search the forum for outdoor grows. I’ve seen some nice ones out there in Cali