I thinked little bit , If I am not wrong , dichromated gelatin requires lots of uv exposure. I dont know uv sensivity of agx. May be we can brush on to soften emulsion an red sensitive cheap daylight or an dye which is out of sensivity of below photographic paper but acts similar to below film or paper - film requires more thinking -

May be we can pyro develop an ammonium softened paper also for relief.

Umut