Hyperpigmentation. Sugar and gluten.

I picked on a pimple two months ago and have a deep brown PIH on my right cheek I us hydroquinone 4% for 4 weeks after which my dermatologist gave me saslic foaming wash and Vitaderm C Scar cream to be applied twice. I have been using it for 3 weeks now but to no avail. Plus I've got enlarged pores after using the above products n a few small boils on my forehead (very microscopic). I've not had any break outs since 2 weeks though. I think saslic acid is not suiting me. The PIH is still not going. I need it to go within 6 weeks since it's been here since more than 2 months now. I can't afford a derma roller or chemical peels like my dermatologist suggested me. What can I do/use to fade away the PIH in 6 weeks and shrink my enlarged Pores. I had gotten small white headed pimples all over my cheek too in between but it's gone. I use a turmeric n yogurt face pack daily to combat the mark P.S - I exercise every day and eat clean and drink lots of water. I'm off dairy, sugar and gluten.