Satsuma Tree Help Needed

Zone 9

Louisiana Citrus Zone 1 here.

I've got a 3 year old satsuma tree that I'm beginning to worry about. Ive noticed recently it doesn't seem to look as healthy as it once did. I haven't changed up anything as far as watering and I've protected it during the recent freeze with some heat lights and blankets. I'm linking an album with a bunch of pictures of the tree that I took today and about a week ago.

I've got leaves that are starting to yellow and will fall off the branch with the slightest touch. During Hurricane Ida it received a little bit of damage to some of the branches from the neighbor's fence, but all in all it came away unscathed. I just don't understand what's going on with this tree to make it start shedding leaves and not being as full as it once was compared to a year ago.

LINK

There's the link to the album with some pictures, and I can answer any questions that may come up to help me pinpoint the potential problem with this tree.

Thanks!!!