I have a small lemon tree and I brought it inside no problem from the summer (followed all the rules about it gradually getting weathered to be inside). Then I moved to a new apartment and the lemon tree is in a sunroom like area (that doesn’t have heat or air conditioning but gets plenty of sun). I noticed that since I’ve been here about 2 weeks, some Leaves have small yellow spots and some are just falling off the tree!

I gave it a bath before brining it inside so I’m not really certain it’s bugs....the leaves that are falling off look healthy but some leaves are turning more yellow. What could it be? Should I replant it?

i did pull it out of the pot to check the roots thinking it might be root rot, but they all looked good, but the entire tree came out easily and the root were somewhat sprawling.