On average a cubic yard of outdoor soil has 30 gallons of water in it. 1 or 10L of water didn't hurt it.

Looks like lack of direct light(5 hrs per day min). I say this looking at the light beaming through the overhead cover. The lower leaves going yellow say feed me.

I recommend if you going to grow outdoors to get large grow bags and dig the holes out for them. 3 gallons soil per bag, per month min. This will take away a ton of problems.

Ohh and auto flowering outdoors is not needed. IMO its never that good. But thats my .2.