3 Days is not abnormal nor that long after a diet change. The mistake made most often is not giving a new diet time to work and not giving the gliders time to get used to it before thinking they don't like it.
please do NOT ADD anything to the bml, if you are having difficulties with the diet contact the diet creator here's her facebook you can message her
https://www.facebook.com/bourbonh
OR call her 321-331-1608 evenings or late at night are the best times to reach her. She will tell you the best way to go about getting them to eat bml.
I would explain, but it's not my diet it's Bourbons, and I don't want people here parroting information that should be specific to YOU and your gliders.
Cracked fur is a cosmetic thing usually caused by humidity NOT diet.
Cracked fur was once used as a marketing tool for one diet ( not bml ) but was later admitted by the diet creator that diet had little or nothing to do with it. If your gliders have cracked fur get a humidifier the ideal humidity level for gliders is about 40%
Lets take this a little farther than the bml. There are many reasons gliders may not eat well for a couple days. Moon,
barometric pressure,
weather,
in heat,
new environment,
new diet,
don't feel like eating much,
the dish is to deep,
the dish is to shallow,
the dish is on the floor,
the dish is on the cage,
the fruit is cut to big,
the fruit is cut to small,
the bml fruit n veg are in layers,
the bml fruit n veg are not in layers,
putting to much food on the plate, etc...
The last one may seem odd but over feeding can actually make them eat less are you measuring everything for each portion for each glider?
For bml specifically.
is the bml frozen or in the fridge? it's only good for about 3 days in the fridge
did you put the wheat germ in the fridge after using it last ? if not it will go rancid
was the apple juice fresh, or sour?