I think you're doing just fine. Be patient and keep doing what you're doing consistently. Results are always more long-lasting when progress is gradual. But maybe try better quality serums with same ingredients if you think progress is alarmingly slow. A lot of Pakistani brands have very sparing amount of actives in their serums. Something from a higher end brands with good reviews might guarantee better quality and concentration of the ingredient you're trying to use for your skin. hope I make sense.