Hello Proctw, looking at your plant, I would say it is still in acclimating mode. During transport to your place from your friend is a shock already to your plant.
Repotting in itself does cause some root disturbance, but if done with care and proper timing, should be alright and if you used correct media. We all have varying micro climates in our growing areas. What may seem already warmer to you may still actually feel cold for your plant, so be mindful of watering. It does not ever like sitting in too wet damp media when conditions are too cold to its liking, so test your soil. Use bamboo skewers, if it comes out wet, continue to delay watering. For me, ideally, I try to do my repotting in mid Spring not in winter. But since you have already done it, then just observe further and be very mindful of watering.
I cannot see very well your media, so hopefully you have added some more pumice or perlite to help in its drainage and airflow at the rootzone.
I know it feels confusing since it is a tropical plant, but true tropical conditions is different, they may like the rainfall and moist conditions there, but among main determining factor is ambient sustained temperature there which often is 70F to 90F (21C to 32C) and sustained humidity. Knowing that will help you understand its cultural growing needs.
In our indoor locations in winter, we can only sustain as much warmth, unless you do have a dedicated greenhouse. But it is doable to grow them properly indoors. Just be patient and learn to avoid overwatering your plant especially in winter. Keep providing as much bright light and warmth you can.
I still see good potential on your plant, just remove fully dried out leaves later. As long as you get new growth at the top part and there is no soggy part anywhere in the trunk then it is okay. Also with heaters running, air is drier, so it is common to see some brown tips.
