The 21-year-old only joined the League Two side 16 days ago until January but is forced to return to The Valley because of a hamstring injury suffered in training.
"After following the correct medical procedures, it is clear that the injury will keep Kevin out for a number of weeks," Wimbledon manager Neal Ardley told the club website.
"It's a grade two hamstring strain and Kevin has therefore gone back to Charlton for treatment. We will assess the situation in due course."
Feely failed to make an appearance for Wimbledon during his time at Kingsmeadow.