Your White Bird is reacting to the repotting that was unnecessary.
Plants that are in overly large pots have excess soil that tends to retain moisture for too long and suffocate the roots. I suggest that you remove all the soil you added to the top of the original rootball so that the uppermost roots are just barely covered. That will allow oxygen to penetrate the root zone more readily.
Then wait until the top inch of remaining soil is dry before adding just enough water so that it dries out similarly again in a week. Experiment a bit to see just what the right amount of water is. For future reference, leave plants in their plastic nursery pots and insert or double-pot those into more attractive decorative planters.
Sorry if this seems complicated, but it is what happens when plants are unnecessarily repotted.
It may also need more light. Keep it close to and right in front of an uncovered window where it can get at least several hours of direct sun each day.