I have recently purchased some house plants to spruce my place up but I am a beginner and am having some trouble with some. For background, I have only north and south facing windows. Additionally I have some garden level space that I am trying to get some plants in. While the garden level windows are still either north or south facing, the light level is a bit lower and there is a thin cream-colored blind that filters the sunlight.

I have purchased both a crispy wave fern (Japanese Asplenium nidus) and some Wizard Coral Sunrise Coleus (Solenostemon Scutellarioides). I initially had the fern in the upper level of my home, within reach of both a north and a south facing window, but not in direct light. While some of the fonds are doing fine, others have started to dry up and become discolored at the ends. I thought perhaps it was receiving too much light (all info on the internet says it is a low-light plant) so I have since moved it to the garden-level part of my home in a very low-light area, near a window that is shaded both by the blind and the outdoor porch. It has been there only 2 days now, and while it doesn't seem to be getting any worse, I can't say that I really see any improvement either.

I bought the Coral Wizard also for the garden-level area and have them in some windowsills facing north (again with the blind). I have two in the same room on different window sills about 10 ft apart. One seems to be doing alright, but I noticed the other one was drooping significantly. I watered it some (the soil felt drier than the other) and also brought it into a brighter area upstairs. It has perked up some, but still hasn't made a full recovery. Info I have seen on the internet says these tolerate full shade, so I thought they might be one plant that would tolerate the garden-level window sills. I would love any advice you might have, particularly if these plants can indeed be grown in the lower-light environment I have described (and if not, what plants might work). I have also included pictures.

Sorry for the long post but thanks in advance for any advice!