I'm fairly sure there is a section in Philip Haythornthwaite's "Colonial Wars Sourcebook".
I happened to have that to hand and had a quick look. You are correct. About six pages, two of which are dedicated to a description of Burmese forces. Not much, but a start, I guess.
In addition, the Osprey
Queen Victoria's Enemies: 4 has some nice contemporary photos and illustrations, as well as one of their signature colour plates covering the Burmese, but not much in the way of text.