I think your tree is dead. The only way to know is to scratch the bark off in various places. If it is green under the bark that part of the tree is still alive. If it is brown, black or grey underneath that part is dead.
With clean pruners remove all the dead part of the tree. Then put the tree in a location it can get more sunlight. Only water it if the soil is dry.
If the tree is alive it might leaf out again. It would be good to know how long it has been without leaves. If it has been many months then the tree is dead. Evergreen shrub if under stress might loose all their leaves, but they will grow back if the stress if removed.
Only fertilise actively growing plant. During the growing season. Typically Spring through summer. Do not fertilise it any other time.
The tree has green under the bark in most places, except the furthermost branches. I will trim the dead parts and try to move it to a place it can get more sun.
Thanks again.
– YenBen Lemon Feb 09 '20 at 04:40