Maxillaria paranaensis propagation from cuttings

[dnatural1]

Hi All,
I was recently given a couple of Maxillaria paranaensis cuttings mounted on tree fern. They seemed like they were making a couple of new roots when I got them but do not seem to be progressing now. See attached photo. My questions are:

What is the best way to propagate this plant? A lot of the photos I've seen of this plant show it mounted (eg https://www.aos.org/SITF-Blog/Maxill...018-07-23.aspx)

If mounted what is the recommended base (tree fern, cork, other ?

Any special preparations required - some suggested I remove the sheets around the pseudobulbs

If mounted is it placed with the leaves pointing up or down (I've seen pics of both ways - mine came with the leaves pointing down!

Any suggestions welcome