Zombie Bride 2x4 grow

This last week had some slow growth on 2 of the 3 plants. The one on the left side that is closer to the 4x4 has had alot better growth then the other two. Closer bud clusters, bigger buds, and a higher trenchomes count. The other two have larger noticeable gaps between the bud clusters and smaller buds. I've been pushing the nutrients ppm levels this last grow to see if I notice a difference in plant growth and so far it's a mix bag. Plants look healthy with no issues really but the two plants with the smaller buds makes me curious if that's from tge nutrients levels or just the strain. With 25 to 35+ days to go I'm probably going to start flushing in 16-18 days. Well that's all growmies peace ✌️