Some people say don't use nutes, but I've used them on Candy Cane from Crop Kings and it responded VERY well. The size was about 50%-75% bigger than in your picture at the same point in its lifecycle, but we also grew them in 4 gal pots in addition to the nute feeding. End yield was close to 3 ounces dried and we let it go for almost 12 weeks. It was topped a little late but recovered well. This is the top two main colas after 4-5 days of hanging to dry.
I love autos and once you figure out a solid feeding plan and optimal setup, they can produce some very impressive yields. Your plant looks really healthy man! Keep it up!!!!