They are far enough along to get some feed. I grew about 18 various autoflowering plants last Summer. Grew 2/3rds of them outside. I killed off a few with nutes too early but yours are past that point.
I had one photoperiod plant I grew outdoors right in soil, sandy soil amended with cheap potting soil and worm dirt from a nightcrawler grower down the road from me. I didn't think the plant would mature before freezing weather up near Canada so I didn't waste many of my expensive nutrients on it.
I fertilized that one photoperiod plant with urine by taking a leak on the ground under it while doing yard work. I had Canadian geese crapping in my yard all Summer so I'd clean it up and dump it under my plant and work it into the soil. I also had deer crapping in my yard and used some of that. I also dumped a bag of composted cow manure in the hole before transplanting.
The plant got huge and I had to bend limbs down all Summer to keep it below my six foot fence as a road goes within 30 yards from my grow area. Legal to grow but can not be seen by public. I got a pound of bud out of that plant with no special nutrients. Lost some late harvested buds to rot after 7 days of no sun and constant rain.
Next time try planting right in the ground after adding soil amendments. Easier to water the plant deeply so you don't have to water everyday and the roots can grow deeper.
We are expecting visitors this week who may not appreciate the girls so I put them in pots so they can be moved to a more discrete place, being that it is sort of illegal... the long term plan is to build a garden bed with other herbs and veggies so that on a cursory glance they will not be noticed, then I will plant them direct in the ground.