Thanks for your question.
Your HDL cholesterol that is the good cholesterol is high, which is protective against the bad cholesterol or LDL.
Hence, in your case, you can try diet & lifestyle modification for next 6 months.
You can also consider taking fish oil supplements, flaxseed oil supplements daily.
Eat oatmeal bran, soy based products, nuts which are effective in lowering cholesterol.
Please go to this link for more information on diet: