Miltoniopsis will rot when grown in full sphagnum moss.
The plant doesn't look like it will pull through. If I'm not mistaken one the green pseudobulbs is already showing signs of being waterlogged and may soon rot from the base. The new shoot also looks like it's standing on it's own, which means it won't be long before that one goes too (it's too young to stand alone like that, usually something that small has to stay attached to the older pseudobulb that produced it).
My recommendation is to start over.
Miltoniopsis in general are cool to intermediate growers that can tolerate temperatures that go down to the low 50's F and mid 80's F, anything above the mid 80's F and you have to try and keep it cooler while possibly watering more.
Good air circulation is important for this plant as it like to be watered quite a bit. Stale air doesn't allow the media to dry out fast enough and suffocates the roots (orchids breathe mainly from their roots).
When watering, allow it to dry out completely before watering again.
Small wood chips is good enough for the media.
Lighting should be medium bright (semi-shade).
It's a shame there's a good chance you'll lose the plant. Pansy orchids are not necessarily the showiest or the weirdest, but they have a nice charm of their own. And they're fragrant!
There, how 'bout that! Both advice and sympathy!