Congrats on the good news! My little girl just turned 9. It's a wonderful thing.
As for your ficus, use a cotton ball and water to wash off the leaves, or just spray it with a squirt bottle to clean off the dust from the leaves. My wife has a leaf polish she uses on her Golden Pathos that get dusty.
Also, keep an eye on [url=https://www.helpfulgardener.com/forum/viewtopic.php?t=27952]this other ficus thread[/url].