For those who might wonder, Alexander mentioned in a previous post re his tree that the pot does have drain holes.
@Alexander2627 We talked back in March, but it appears you haven't made any significant adjustments to your care regimen.
FWIW - Our job as growers is to identify stress factors and limiting cultural conditions, then adjust so the plant is not forced to deal with cultural conditions it's not programmed to tolerate, which causes stress and systemic/process imbalances. That requires proactivity as opposed to hoping the plant will cure itself.
When did you last fertilized? When did you last flush the soil thoroughly?
Al