Merry Christmas Blanch! She is looking very good! yes, the yellowing is a normal progression, Hopefully it doesn't yellow to-too quickly or may have bit of hard time getting her to finish, once no more green left on a plant, the plant will stop doing anything. so hopefully you didn't cut off your grow nutes too soon, I usually wait until After pre-flowering started & can see set flowers before changing to transition nutes, then onto bloom nutes.. everyone who changes and stops grow nutes before pre-flowering started & flowers set, will kinda have a challenge, getting the plant to finish up correctly.. The plant needs the grow nutes the most during that time, Yours look far enough along where they should finish without any problems, I see your at day 61, may I ask at what day you counted day 1? were 1st set of leaves out? or you counting from time broke ground? I'm trying estimate how much time on that one. It just don't look at day 61 to me, at day 61 I'd expect see much more developed buds/flowers.. It looks more like day 50 or so, I don't mean any of this in negative way, am just trying to estimate how much time left, but the day just seems little off..I start my day 1 when 1st set true leaves are out..If started your count-down before the first set, then that would make since why looks day 50ish to me..