I haven't read the whole thread, but you need to rub it's anus. It needs to be warm/moist Q-Tip and you need to rub it on the bum (under neath the tail, not on the tail) firmly and in circular motions to stimulate going to the bathroom compared to rubbing its stomach.
Warmth, constant feeding, lots of stimulaton/exercise, and you will basically be good!
Kaida- CT Female 2.5 Gal.
Julep- HMPK Male 2.5 Gal.
Fandango-HM Male 10 Gal.