NH3 reading?
NO2 at 3ppm is considered toxic, Why so high if tank is well established tank.
Tank water is very mulky/cloudy. Wondering you may have disturb the tank too much.
Since you are leaving in 2 days, how about doing 25%
water change (do not vacuum gravel, do not touch filter media)once in the morning and one in afternoon and cut down on food. Dont know how long is your vacation, ,more concerned with aphyxiation/acidosis due to high NO2 exposure than starvation.
How about adding Aq Salt, 1 tea/5G and compensate correct amount w/ each water change (if done 10 G pwc, then add 2 tea). Salt will help you detox NO2 since Na+ will bind with NO2- thus less toxic ionic form.
I do not know how you set up Q/T but add some gravel from main tank in hoping that Q/T stablize faster.
As far as medication, very difficult choice choosing b/n detoxicing nitrite poisoning or treat for eye problem.
If was mine. would detox first by using Methylene Blue. Known to work and have used them when receiving new fish with great results. Follow the direction on bottle carefully. Cant remember the dosage and duration..
Lets hope main tank stablizes before you leave.
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Not to forget Alex,thank you very much 
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