Yes, you can change your investing profile. In order to do so, you are to update your risk profile by amending/altering the information provided in the same.
However, it is to be noted that you can change your investing profile or update your risk profile only 4 times in a period of 6 months.
One attempt for the same will only be counted once you enter the OTP and accept it. If you wish to reassess your profile you can without entering the OTP, once you enter the OTP the results would be confirmed and you will have to take another attempt.