Baby orchids - dumb move??

[JaynetLee]

I have always wanted to be able to grow orchids. But I don't have ample good light. So I bought a mini greenhouse and some LED lights and ordered some young orchid plants from an Etsy seller. The plants are very young and some don't have a very developed root system. I didn't have the right kind of medium, as the bark seemed much too coarse and large for these small plants. I did finally get more appropriate medium and have since repotted a few of them. A couple of them look okay, a couple are getting some yellowing on some leaves. I think that it's possible that the LED lights were too much for these young plants all at once. So, I now have them on a shelf in front of South/West facing windows with a sheer curtain that I pull for the afternoon sun. The Phals are in a north-facing window. I am so desirous of some kind of sign that I'm doing something right. I have had them for almost a month but have seen very little if any growth and just wonder if I'm doing anything right. I have been watching Miss Orchid Girl videos - but until I see some success, I'm just very insecure and unsure of my ability to keep these little babies alive. I should mention that I'm in Upstate New York (where winter never ends). Just to help out my impatience, I did just order a Paph which is in spike - so I should see some blooms soon on that once I receive it. But how long might it be before i see something from these babies? Even just some growth?