My ficus is thirty years old, repotted2 yrs ago. Some trimming but nothing major past year. Losing leaves with dead twigs and some dead branches. There is new growth but tree was a lot fuller years back. Major branches trimmed years ago and area where trimmed has some black spots. Used to be in kitchen now in livingroom for about a year. Should I repot, move, trim? Should I put it outside? I was afraid it would get sunburn. Do people come to house to treat ailing houseplants? I don't want to lose this tree my grandmother started it. Thank you.