yellowing leaves, some with spots
I live in Massachusetts, and my Meyer Lemon is potted. I keep it inside in the winter, usually try to run a humidifier off/on. I do notice spider mites, and wipe them off the leaves periodically. Lately, I have lost alot of leaves, they were yellowing and dropping. Now, I see some are yellowing leaving green spots (see pictures).
I have a ton of flowers, and a few small lemons growing. I am not sure if I am doing anything wrong, or if I should just leave well enough alone until I can put the tree out when it warms up soon. Please advise!!