It looks fine at the moment. I personally would not repot it. Especially since you just did it.
To divide birds, people often will slice the root ball making sure to keep the entire set of stems together.
What is at the bottom of this pot? I tell everyone which comes to my place, you are overwatering too much. I water my bird once a week at the most. Usually once every two weeks, but every plant is different. Also, in all of my plant pots, I tend to put grave/rocksl in the bottom. That way the water can easily drain out without the plant sitting in water. Do you take the plant to the sink or just water it in that place? I take mine to the sink every other week and give it a good water, let it drain for 15 mins (I do this with all my plants). Then put it back. It sprouts a new leaf about every month.
