Over potted phal. Repot again?

[Blooming]

Hi there! This is my second time asking a question here. The first time I asked about my other phal and everyone was so helpful!

I got an orchid as a gift about 3 years ago. I had no orchid experience, almost no light in my old apartment and I'm surprised I didn't kill it. I didn't mind that it never bloomed again, I just wanted it to be healthy so I decided to repot it. I did a lot of research on good soil and the right size and shape pot. I went a little bigger than the pot I had before (I think I went from 5 to 6 inches, I can't remember now) because I assumed that's what I needed to do based on what I'd read.

Now I realized that advice was for healthy orchids. Mine at the time only had two wrinkly leaves left. When I took it out of the old pot I realized there were only tiny little roots left. I didn't know if that'd be enough for it to live.

The next morning I went to see if the two orchids were still living (the one I'm posting about and a much healthier, more recent gift) and to my surprise it had grown a brand new leaf! I was so happy! That was about three months ago. That same little leaf has gotten slightly bigger, but that's all the growth it's had since then. Except I noticed the roots are expanding and looking beautiful. I guess my baby is using all its energy to grow roots.

Should I have gotten an even smaller pot than the one I had before? Is it too late to downsize now months later? Is it going to be a shock? I don't mind if my orchid takes a long time to bloom again, I just want to do what's best for its health.

Thank you so much for reading.