How can I optimise for better returns?

Hello,

I have been using indmoney stocks SIP for a while now and have been able to accumulate a good portfolio in stocks. The overall return has been hovering around 18-22%.

The portfolio comprises of common and wellknown large caps, some Midcaps as well as some smallcaps. The distribution is nearly equal i.e 33%.

I don't sell anything but rather the SIP keeps buying different stocks at different days through the month. I also invest a lumpsum when the market seems down relatively.

Is there a way to optimise this further?