Q.Rubber Plant Tips Brown And Holes?
Hello! I bought a rubber tree plant about 3 weeks ago. It’s still in its original pot and soil. I have since watered it twice, trying to keep an eye on only watering when the first top 1.5inch is dry. It sits in indirect sunlight 90% of the time towards an East facing window. Some direct light does end up hitting it every couple hours some days, but only some leaves. I rotate it often. I’ve noticed these brown crusty tips with holes in them. Any ideas?? It’s only on about 3 leaves. Also this small leaf at the very bottom fell recently. Thanks o much in advance!

Certified GKH Gardening Expert
These trees are very drought tolerant, and not tolerant of wet soils. Any spotting will likely be due to overwatering. The container needs to be allowed to dry out very thoroughly, and can even dry out, fully, to the bottom.
I would recommend treating with a fungicide and only water once the container is almost fully dry down to the bottom. This tree will prefer neglect over too much care, though some sources recommend keeping the soil moist. I wouldn't recommend this, since they are prone to infections.
Here are some articles that will help:
https://www.gardeningknowhow.com/garden-how-to/info/using-fungicides-in-garden.htm
https://www.gardeningknowhow.com/houseplants/rubber-tree/how-to-care-for-a-rubber-tree-plant.htm