thanks to your good wishes and better advise! it looks as after all the leaves fall of, hope shines still.
it is sprouting back!!!
i'm gonna travel this week so i'll still gonna keep it inside and as soon as i come back i'm gonna put it out next to my olive.
thanks to everyone. what i did was to repot it and cut the very base of the maple put free-draining soil mix and open up two more holes for better draining.