Jack Herer Auto - 1st Run

I am in a tight spot. The outcome could end in disaster and all my hard work as a 1st time grower who is coming to the end of his 1st run, could be RUINED. ... here goes - The ladies started off a bit slow, as I had some challenges as a 1st time grower. I lost one plant due to severe Rust Fungus. Night time temps to low and high humidity. It was rampant and I did not want it to effect the other healthy 2 plants. The remaining 2, I believe they are in Week 11. They look like they need a couple of more weeks but under scope I do see some clouding to the tri's -- and the saga continues, I just tried to upload the scope pics & POOF! they went ? .. who knows where ... this turning out to be the perfect storm. I am not growing Bananas for F sake. ... Ok, so I have to travel for 9 days, starting Thursday next week. I do have a Moistenland automatic watering doodad & it works well. I will have to use my bathtub for a 9 day water reservoir, or a clean trash can. I am thinking of starting the flushing at the time I leave, that gives them 3 more days of light nutrients before I leave. When I return it will be the end of week 12 and not sure what to expect ... I do have a camera in the tent and can remote control-ish the temp/humidity but not the lights -- I feel guilty leaving them at such a critical time-- I am afraid of coming back plants that were flushed to early & losing a potential good yield, or worse! I see that the Flower is 8 weeks -- The buds have thickened up but have more time to go - so I will continue the normal nutrients. I think -- Updated photos today -- bottom ones - still wondering what to do while I am away. I have a good res with a water timer I also added 2 air fizz stones from my DWC setup Any suggestions or thoughts would be appreciated.