Yellow leaves early flower, someone help some advice

It’s my first first auto grow. In the front I have WOS Neville haze auto at day 56. In the back left I have Seedsman blueberry auto at day 68. Back right Dutch Passion Night Queen auto at day 68 also.
3 gallon pots—2x2 tent—spider farmer sf1000–bottom 1/3 of pot is FF ocean forest and top 2/3 is FF happy frog. I’m feeding FF big boom and tiger farm alternating each water. I been feeding 1/4 tsp cal mag every water. I was giving myco up til 2 weeks ago. The blueberry i started flushing last week, plan to harvest on day 75ish. The haze is coming along fattening up and stinkin like lemony terps, but flowering time says 90 days, I’m thinking it’s going to finish up a little sooner than that, but still a few more weeks. My leaves have been showing rust spots since a few weeks back and now leaves are yellowing more and more every watering. I know leaves will start to yellow during flower period but I don’t think they’re supposed to this much yet. I’m worried my buds aren’t going to finish right if the trend continues. The night queen is weird af. Leaves are skinny, rust spots, yellowing, little drooping. It started flowering the same time the haze did but seems like progress has come to a halt. A lot of white hairs but minimum trichomes and not much change happening as far as fattening up. No smell on her. Anyone tell me if my plants are doomed?

The plants in question, have they been flushed?

Jpwt92 said:

The plants in question, have they been flushed?

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The blueberry and night queen autos in the back are on day 68 and the Neville haze is on day 60 in the front. They’ve been showing yellow leaves and rust spots the past few weeks. I’m feeding foxfarm tiger bloom and big bloom at half strength. I started flushing a gallon of 7.0 ph distilled water before I watered with a full gallon of nutes at 7.0 ph as well. I’ve been watering with 7.0 because a few weeks ago when I started seeing deficiencies I noticed my ph run off was much lower than the 6.3-6.5 I was puting in. Like 5.3 runoff reading. I thought the soil was very acidic so that’s why I started doing thee flushes before I feed. The flushed haven’t done much, I Notice my runoff is still lower like 6.0. The night queen is all weird . Very slow growth, minimal trichomes, not fattening up much and white hairs have been puffed up for couple weeks just liek this now. I’ve jsut started noticing some trichomes forming now but it’s way late compared to the blueberry which should be ready for harvest next week.

Jpwt92 said:

The plants in question, have they been flushed?

Click to expand...

This is what I would suggest. I have little knowledge but my last two looked similar and they were nutrient burned because my soil was too hot. I flushed them, defoliate a little bit of the really badly burned fan leaves (mostly because my plant was very short and bushy to begin with). After that the damage stopped getting worse. Of course what’s dead is dead but if it is in fact nutrient burn, flushing can stop the spread of the yellowing and rust. I would suggest following more experienced growers advice but I thought I might chime in. Mine was worse than yours and once I flushed it I flowered her for roughly another 4 weeks and nothing spread. I definitely lost some yield and a few spots on some of the buds were effected and had to be disposed of, but I still wound up with roughly 40g of dry trimmed bud from this little autoflower that I’m curing now. Did you flush then feed right away? Or did you flush with water only, let it run its course and dry O
out then feed?