Box reflection capture should work. Last time I used the forward renderer you needed to enable “High Quality Reflections” in the material properties in order to get parallax corrected reflections.
Sadly I don’t know if this can be done on mobile. For whatever it’s worth, if you’re fairly adept with materials, it’s pretty easy to implement this yourself (though I have absolutely no idea if this will compile for gles or whatever mobile VR is using…)
It’s not very easy to work with if you need a lot of reflections, but for a few rooms it will work.