You can send a redemption or withdrawal request to get your money back anytime during or after the SIP runs. After all it is your money.
The only except is if you invested a tax saving mutual fund (ELSS) which has a three year lock-in.
To know the implications of redeeming early, i.e. exit loads and short term capital gains, consult an advisor. Or use an advisory platform like Jamawealth.com which runs on a zero commission basis, because honest advice is hard to get by in financial matters.
Sadly some intermediaries and banks make it tough to cancel an SIP. Stay way from anyone who tries to block your freedom. Your financial freedom should be your only concern.
