Outdoor 3 blade fan leaves

My friends growing an outdoor indica/sativa 50/50 from headies and it began flowering about 3 to 4 weeks ago and its been beautifully healthful all along no yellow or cupping. But now the newer fan leaves coming off of some of the heads (alot of lst done, alot of tops to it now) have three leaves rather than five. I'm not sure if this is regular for a non stabilized strain? An indication it is reverting back to veg? Lack of P or K? Any ideas well helpful, preferably somone experienced.

It is ok, nothing is wrong with the plant, take no drastic measures to "save" it, it is fine...

haha, I didn't start flushing with h2o2 or foliar feeding with undiluted kool bloom yet.... Well thats refreshing to hear man, I just get mad precautious. put alotta work into her and wanna not make any rash judgement thanks.

I have the same thing on one of mine.It seems to be be flowering really good though.