Any ideas on this early pre 💐

Do your plants a favour and go to 18/6, all cannabis plants NEED sleep. Yes, some autos can start flowering around 3 weeks of age........this is why I will never grow autos ever again. You can certainly get male auto flowers, not all autos are female! There are also plenty of hermie autos, just like in "normal" cannabis plants.

Still a bit to early to tell. I would say you should start to see something aorund week 5 to 7 if its on track. Keep checking it on a weekly basis and you will see when its sarting to show. white pistils will start to populate at the nodes and shortly after that it will start to grow and stretch more and more faster. Good Luck!

You're not in pre-flower yet but it looks to me like you probably will be in the next week or so... so no worries - there won't be a long veg period for her! The one thing I would caution you about is the amount of nitrogen you're giving her... between the Grow Big and the Fish Mix, there's a ton of nitrogen and when she goes into pre-flower, you're going to want to start cutting that back before you end up with a toxicity and a calcium lockout... But she looks great right now! Good luck the rest of the way! (And kudos to you for starting a diary - it really DOESN"T take much time!)

Its not in early pre flower buddy you are fine. Before she flips (coming into pre flower) you'll see stigma (pistils, whit hairs) come up from the shoot at the top. She's far from pre flower. So no worries at all pal..just stay the course and good luck with your grow.

High bro, Autoflower strains are ALWAYS female! So I can ensure you that this is a 100% female cannabis plant! But for future grows it might be easy to know how to identify male vs female cannabis plants. I will send you a link from the grow weed easy website with a great article about the identification. They use pictures and images to make it extra clear! This webiste is the best for all information about cannabis growing! Here is the link: https://www.growweedeasy.com/marijuana-boy-girl