The present invention provides a method for optimizing the MMP of CO2-crude oil mixture in the reservoir so that CO2 can be utilized more effectively in the miscible displacement process. We propose that the reservoir be depleted optimally such that the lighter ends (C1) are liberated from the crude oil and get produced at the producers. The depletion strategy proposed here will be highly useful if the reservoir in question has an initial bubble point pressure that is similar in magnitude to the CO2 MMP or even higher. Re-pressurization of such a reservoir to bring the reservoir to bubble point will require significant injection of a fluid such as water, which will be very demanding operationally. Moreover, most of the light ends such as CH4 have already escaped to the producer wells. The resultant oil is now depleted of the light ends is enriched with intermediate ends. CO2-MMP laboratory measurements were conducted with a live reservoir oil from a field in India. The MMP was measured using the two widely accepted techniques; Rising Bubble Method and the Slim-Tube Method. Results of the experiments revealed that the reservoir oil with higher mole fraction of light ends (bubble point of 3000 psi) shows a high CO2-MMP (~ 4000 psi). The same reservoir oil, when depleted of the light ends, had a lower bubble point (2000 psi) and a lower CO2 MMP (3000 psi). Thus before performing the CO2 flood, we propose to deplete the reservoir optimally so that the light ends (C1) are liberated. The depleted reservoir oil will now be enriched with intermediates. This oil will have a lower bubble point and a lower CO2 MMP than the original oil. CO2 flood for such a reservoir will not require the pressure to be restored to original reservoir pressure and will thus be less operationally demanding.