Weight Management for males in Singapore

Hi everyone. Recently I was requested to lose 4 to 8kg by my doctor. This is due to some medical reasons. I have tried Optifast meal replacement. The discipline I had when I was younger is no longer with me. I am just constantly so hungry.

My BMI is 24.5

The food in Singapore is amazing and I love rice! Has anyone tried any appetite suppressants etc. Or did anyone try any weight loss practices etc specifically for us guys who live here.

I am not fat and I can't currently exercise (lower body). I will NOT take weight loss pills or anything else that would harm my body.

Please send me your wisdom SG guys on reddit.