Yellowing sugar leaves?

I’m thinking that you could be a little too close to your light with some of the taller branches. This may be your cause. I just had a pheno do this when all my other plants around it were fine. Turns out my light was indeed way to close because my lazy self didn’t raise it after my first adjustment. If not burning then I would think you are starting to experience end of life color shifts. I would just keep in your plan and power though till the end. Possibly two weeks + from the looks of it, very hard to tell without seeing your trichomes on the bud.