If you track sheds and weight gains, you can GUESS around when they will go into shed again. Once again, based on growth or you may say when the last skin starts getting a bit too snug. I have seen with all of mine that when they were around the weight of yours. they seemed to shed after gaining around 65-75 grams since the last shed. The ones I have that are around 600 ish grams shed about every 100-120 gram gain. The one that is 1500 grams just went into shed again after a gain of about 225 grams and my largest one which is around 2300 grams has only shed once since I got her so I cant gauge it yet with her.