Use stronger soap like Dettol for reducing oiliness and bacteria on skin. Consult dermatologist for a proper medication. If there are less pimples, cream may be enough. Bigger or more pimples need tablets too.
Skin turnover time is 1 month or about 28 days. Any pimple patient may expect around 80 % improvement after 3 months of treatment. So, there is no " fast " approach to treatment.
Once a month follow up visits are advised. Kindly consult dermatologist early and follow instructions - that will prevent black marks and scars too . Good luck !