This week I've increased the nutrients (from light to medium schedule) as the leaves were getting a general pale green tint. I've ignored the random yellow blades as I think it's just genetics at this point since no matter what I do, they stay there without getting better or worse.
As for maintenance, I've done a bit of defoliation to help the plant breathe a bit and allow lower leaves and branches to gain access to the light.
I've change the air scrubbing filter which greatly increase exhaust air flow which helped lower the night time humidity. I was frequently at 70% humidity during the night which is not dramatic, but could promote mold which we don't want.
I'll be installing the ScrOG net and switching to flower mode as I'm already at the same plant height as last time.