The nam doc Mai looks great, but the Glenn which was in ground one year longer is starting to drop leaves.. All the leaves are curling up and drying but the branches still look green... Should I consider cutting back some of the branches? Or just leave it and see what happens? Should i water it a lot or cut back since its leaves are falling off.

Its weird how the nam doc is fine.. But maybe some critical roots got cut when transplanting the glenn since its a season older.