It looks basically OK with the light and water it's getting. I would start by cutting off the piece that is starting to vine off to the right in the first picture. I'd cut it just past a bumpy node close to the soil, it may resprout from the stub or root. These are rain forest plants that will vine 60 feet up a tree. I cut off the stems that start to vine, it leaves a much more compact, attractive and manageable plant. The cuttings are very easy to root, you can add them back into your pot or start some new plants to share. I wouldn't trim the rest of it right now.
I live in a very dry area. Mine is in a fast draining pot, and seems to like frequent, thorough watering, keeping the soil just a little moist. Don't leave water sitting in the saucer, that can rot the roots.
When they get too much light, the leaves will get very light green or even fry and die. Too little light and leaves will get very dark green and the whole plant will stretch out. Mine seems to do well with medium light, and it's easy to adjust according to how the plant looks.
I'm not sure about re-potting. If you decide to, don't disturb the roots too much, the same pot would be fine, and use a quality houseplant soil.
I go very light on fertilizer, it just encourages more spindly vines. Mine's been in some very old and tired potting mix for many years, I give it quarter strength complete fertilizer once or twice a year, and it's doing fine.
This is one of the few plants I've had good success with for many years. I hope mine gets passed down to someone who will keep it going!