With half the season down, here are my predictions for the rest (I have not read the source material and never read spoilers/theories for shows:
Juliet is sick from a wound she suffered falling down the chute in 18, likely some sort of radiation poising got in there because the tape was coming off on her suit near her entry into 17. Solo will bring her into the vault to give her medical attention and she will learn many applicable secrets about the Silos. Solo will refuse to give her back her helmet until she agrees to fix his water problem. They'll pump the water out and decide to go back thru the low point access tunnel--likely around ep 9 maybe 10.
She'll return to basically an all out revolution in progress. Lots of collateral damage and deaths. I think Knox is wiser than he lets on and has figured out that Judicial and esp IT run on their own power supply--he gave Shirley a wink/cue when they were walking thru. He's also made it a point to say how everyone thinks their job is the most important in the Silo and he's comes to grips with the fact that mechanical isn't that critical and is mostly used as a blame device throughout Silo history.
I still have no idea on actual time frames and if the ones they cited are remotely accurate. The memory drug makes almost anything possible...
Juliet saves the day and leads the down deep and mids back to 17 to rebuild, setting up an eventual war with the remnants of Bernard's power structure (he'll hold Juliet's dad hostage) and whomever the true leader(s) ends up being--if they emerge this soon. We might even get some sort of communique from another Silo leader to 17?
Story wise I’m not sure what is gained by showing all out civil war
There aren’t any ‘not mechanicals’ characters that would make that fight good drama
It’s mechanicals vs the puppeteers
More than likely Juliet comes back to main Silo right before war breaks out
Setting up a myth/propaganda vs truth showdown for s3