The plant needs to be pruned to half of the current size. It needs to be repotted into a bigger pot and it needs a sunnier location.

It might be easier to just take a cutting and mail it to yourself. I don't know the rules for transporting cuttings on a plane. It's so ridiculous now, why go thru the stress?

LOL!! I've hauled all manner of plants on planes, usually in my carry-on bags. It is NBD as long as you are not crossing any international borders or transporting invasive or restricted species. btw, the cutting wrapped in a moist paper towel in a plastic bag is a very practical way to do so.

Some warm climate States with big agricultural industries such as California and Hawaii have a history of restricting movement of plants and plant parts across their borders. Flights to Honolulu used to include a drill where forms would be circulated when arrival was being approached, where passengers were supposed to declare any plant parts - including fruits - they might have with them.

When I flew back from Britain with conifer cuttings in ~1994 I had to declare them in advance, surrender them upon arrival, and come all the way back to the airport to pick them up later, on a different day. (One thing that was dumb about it was they seized most of the golden Chinese juniper cuttings but left multiple fragments of them still in the box, so that if the material had been carrying a pest or pathogen it could still have gotten in).

I smuggled some African Violet leaves in my bra when I went to Canada.

Ouch! I can't imagine how that felt!