I have nothing but males and this is usually the time my older ones start refusing for about 4 to 5 months, only taking 2 or 3 during this time period. I offer once a month to them once they start refusing. But from the eleven I had since getting back in (I had some bad, and still do “health issues”) They usually don’t start till they’re over two years old. Maybe I just been fortunate and had good husbandry. But I know others have had issues with younger and smaller animals. And I wouldn’t be surprised if after a small fast he goes back to eating. Just space out the feedings till he starts eating regular again, and double check your husbandry. Hope this helps, good luck. Hopefully others will chime in.