So basically Ive moved from Fort Myers, FL up to just SW of Orlando, FL. I have two citrus trees, a Rangpor Lime and a grafted Key Lime/Meyer Lemon. The last is doing great! The former has been dropping leaves over the past month. IDK why. Same fertilizer and watering routine., Same as always. Soil is nearly perfect composition wise via my soil tests and pH tests. I trust these sensors and tests very much due to linear regression Ive done on the data. Very little error. Bluetooth sensors say its getting a little too much sun, however the other two say the same for my veggies in my elevated raised bed and they are doing fine as well... (Yes I'm a total nerd...) Also have a hard time believing that as the sun is only 45° above thw horizon at solar noon. (Look up solar radiation values by degrees to see that its energy dosent really accelerate until it's more like 65° or so.)

Anyways whats going on here. Its mot undergoing shock, insects such as aphids or ants, no scale, diseases or fungus as far as I can see....good actually to be honest. Even clipped the ends of some branches to encourage new growth; nothing... I should also add with this unusually cold December and January, the coldest it experienced was 35F and that was only for an hr or two. Its not the wind either too. Its almost three years old.. what gives? Any advice? Anyone see this before? This tree means alot to me and I hope to solve its ills. Thanks in advance!

Proof everything else is growing ok...

Data from Bluetooth sensor for the Rangpor Lime...