The top LED lights always burn the bulb in series
If it is a constant current drive, there is a special adjustment element to adjust the current.
A simple circuit based on resistance current limiting can only be adjusted with current resistance.
Do not know what kind of drive you are, try to reduce the current of LED, do not exceed the rated operating current of LED on the line. The method of reducing current is related to drive circuit, and the current limiting method is different for different circuits.
If the regulator is powered, it is necessary to lower the voltage
