I brought my potted mango tree inside on October 15. since then it produced multiple flowers that eventually all shriveled up and died. Now the leaves and branches are shriveled and falling off but have a white coloring on the inside of the leaves. What is wrong with it and what can I do to fix the problem? I appreciate any and all assistance. This is my little baby! I bought a grafted tree 4 years ago and have been lovingly growing it!!