The sensitivity curves for observing  CEvNS interaction for each core-detector distance under consideration as a function of the parameter mass by time were calculated by assuming a very conservative background of 10 kdru, a Quenching factor from CONNIE-2019 [arXiv:1906.02200] and perfect efficiency above 15 eV. The time involved in reaching a 95 % of Confidence Level is in the order of days per kilogram of detector.