Coin sip vs AMC sip expense ratio

If I do amc sip and normal sip of same fund will I have to give expense ratio twice?
I have amc sip going on in one fund but I want to increase the amount which is not possible. So I’m thinking to start normal sip in the same fund. Is there a better way of doing this? Or should I keep on “buy more” every month in amc sip?

you can do any of the following:

  1. close existing AMC sip and start a new AMC SIP with higher amount
  2. close existing AMC SIP and then start new COIN SIP with higher amount. Here you can much more control in future to pause / modify etc.

buying more on adhoc basis should be avoided. you tend to forget and miss SIP