Hypopigmentation spots after repeated Q-switched 1064nm laser treatments tend to be prolonged. Hypopigmentation is the loss of skin colour.
The best option is actually to stop further laser treatments. Instead, you should wait for spontaneous recovery, which often takes many months.
With that said, you may choose an alternative option to help tackle this issue. You may choose to consult a pigmentary disorder specialist. You can make an appointment at the National Skin Centre to see if a trial of excimer light therapy may be useful to hasten the repigmentation process.