Growing Blueberry Auto from Zamnesia.

looks like coco coir? You want 2:1 coco:perlite in future. The drying patters looks like bad watering habits too... fully saturate, never partially watee. if it is soilles you also need 10% runoff. if that is coco, repeat when that top layer starts to turn color. This looks bone dry which with coco is probably waiting too long between irrigations and could be part of why you have a smaller plant than expected. LST didn't accomplish much, this is true. Training is about manipulating apical dominance. Tallest bud on most primary branch takes the most resources. The idea of LST is to evenly spread that allocation of resources out amongs several branches. Use an anchor at bottom so it doesn't lurch through the soil an rip its own roots trying to bend back upward, which it will try to do in perpetuity. Once branches get rigid, it may be reduced, but still tries to fix itself. Bend in 2-3 spots at bottom and form a nearly 90-degree bend in it before you tie it down. PLace anchor tied to opposite wall and then tie down the top. It should be mostly horizontal. I'd bend it down between the altnernating growth so you don't have to prune off anything facing down toward the dirt. Also anything below the first bend will be trash, cut it off. Continue to manipulate dominance of the branches that grow out of this horizontal length. If something jumps ahead, you can bend it down or tie it down temporarily and the others will catch up. With autos i'd suggest shooting for ~7 primary branches. An "XL" auto with a long vege has time to grow more. Since you never know exactly how much vege time you have with an autoflower, it's a guess. Let that primary tip grow vertically when the other ~6 have some good development and it'll catch up because the plant will favor that growth tip even if slightly vertically shorter than others. LST can be stressful. It could be why your plant flowered a bit faster than normal - that could be genetics too. Tthis is why it may be better in teh long run not to train autoflowers. Training doesn't increase yield. It mostly just evens out growth and bud size -- you don't get the massive colas but you also get less larf. This is generally viewed as a positive, and i agree, but with a tiny plant like most autos are (50-100g) it also doesn't have as large of an impact as it would with a larger plant. keep doing it if you want. I'd simply suggest growing photoperiods.