A ‘series’ fund is by definition a close ended fund. Hence you cannot do a SIP in it.
This particular fund’s open ended counterpart is an average performer. You can do a SIP starting Rs 500 per month upto Rs 2 lakhs.
There are better options to invest in equity for tax saving or long term growth. Do check out at:
Equity Funds: https://www.jama.co.in/direct-mutual-funds/explore/?category=y&class=equity
ELSS Funds: https://www.jama.co.in/direct-mutual-funds/best-equity-elss-direct-plan-mutual-funds/