I went back to my hometown for five days but due to some reason I'd to delay my stay to two weeks. Before my leaving I watered Adam ( Fittonia's name ) and placed it beside the window so it can indirectly get some sunlights. ( My friend once told me direct sunlight can kill it :/ ) I came back two weeks later and shocked to find my Adam had wilted to this condition. I watered it twice or even thrice a day for a week but its condition had never got any better. Ants are thriving in the house ( due to hot weather ) and they even bite Adam. I've to shift it to different places to avoid bitting from ants. I've cut some of the dying stems. ( Advice from friends ) Anyone has any other idea of saving it? Thank you in advance! :' /

Indoors, in that corner, in a presumably temp-controlled home (meaning you don't live in over 90* indoor temps) and in the original Lowes' soil it came in....I'd be surprised if you could water once a month. Mine are indoors in a not too bright room in basically pebbles and rocks without any soil and I water mine about once every two weeks. If you keep it in that pot with that soil, feel the soil at the bottom of the pot through the drainage hole and when THAT is dry--water. You should read the link Al attached above. If you only have one plant, it may not be feasible for you to make your own mix, but if you grasp the concept of what he is talking about, it's simple to find small amounts as replacements to recreate something similar, and even in the worst case, it would be better than the soil it's in. If so, then that Sans may very well be with you for the next 20 years. Whatever you do, I would not keep it in that soil. It's very rare that a big box store has something in even half decent soil. i love Lati's idea of taking the label back to the store and demanding a replacement! LOL I have no idea why you kept the label, haha, but since you have it, you could kick and scream. Can you record it while you do it, though? It would totally make my day. ;-)

I agree with Josh. Temps have nothing to do with it. My temps struggle to get into the 70's for highs this time of year...we are hitting high 40's now on some nights. Don't over do any nutrients if you do add some. Just normal amounts. Also, unless that leaf problem is affecting many leaves, don't worry about it. Especially if the leaves are at or near the bottom of the plant.

Definitely time to repot. This so-called soil provided by the producers is not good in the long run. Try a mixture of lean soil (seeding soil works nicely), gravel (very fine, it may be very coarse sand), some seramis and perhaps a little pine bark. Or any not-too-rich soil with lots of perlite mixed into it. The trick is to make the soil very free-draining, then you may water with very little danger of overwatering. I think that wrinkling of the leaves on your plant is actually due to underwatering. This present soil is retentive, but if you water in small quantities or infrequently (or both), the water stays near the surface and roots get very little. While repotting, remove as much of original soil as possible (use your fingers to pry the roots away gently), give your plant a good drainage in new pot, sit it in firmly and DO NOT water for a couple of days after repotting. Good luck with you plant!