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Some leaf loss from ficus is normal, especially in the winter. If you think that yours is shedding too many leaves, it may be an issue with humidity or watering. Make sure the plant is getting enough water and also check to make sure that it does not have root rot. A humidifier in the room will help increase humidity.

The cold should kill any scale that might be left, but just in case, you may want to water the soil with a neem oil solution that will kill off any remaining scale. This article will tell you more about neem oil: https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm

It is likely trying to go into dormancy. Even indoors, a fig get cues that it is time to go into dormancy from temps, light levels and humidity. You can stop it by increasing all of these things for the fig tree.

If your fig is a ficus, this article may help as well:
https://www.gardeningknowhow.com/houseplants/ficus/ficus-losing-leaves.htm

Tree roots are actually pretty lazy. As long as the tree has the water it needs and the space on the other side from your house to grow, it will not be a problem. Tree root problems occur when a tree can't find all the water it wants, so it starts to grow into water rich pipes, or its roots become constricted, say because it grows between two foundations or heavy soil constricts growth on one side and a foundation on the other. Take a look at your situation and see if that might apply to you. If the tree has plenty of root room to grow around it except for the side that has the foundation, you have nothing to worry about.

Those certainly are large pots to be blowing over! The only thing I can recommend is installing some tie downs on them. Perhaps take some thin but strong rope and dye it a color that will match the containers or blend with the area and tie the containers down to some screw in the ground anchors is an "X" pattern. You could decorate the tie down rope lines with little critter ornaments climbing on them or hanging from them. Another method might be to place the containers next to a 4x4 fence type post, well set into the ground. This would help lend some taller support to the containers and what I suspect are a bit top heavy plantings in them.

Hope this helps!

Stan the Roseman :o)

I am not sure what mim oil is, but if you have not tried neem oil, I would recommend it, though you may need a few applications. If you have tried that, I would try insecticidal soap.

When you use these things to treat the scale, wash the plant first to get off as many of the scale as you can. After you treat the plant, continue to treat it weekly for a month or two. What is likely happening is that some scale are in the soil and they do not get treated when you treat the plant and then re-infest the plant once the others have died.