 The study investigates the size of discrete time crystals that can be created for a Bose-Einstein condensate bouncing resonantly on an oscillating mirror, finding that big time crystals with sizes in the range s almost equal to 20 to 100 are easier to realize experimentally than a period doubling s equals to time crystal. The study also discusses the effects of using a soft Gaussian potential mirror for the bouncing BEC and presents an experimental protocol for realizing big time crystals, providing a flexible platform for investigating non-trivial condensed matter phenomena in the time domain. This article was authored by Christoph Geigel, Tien Tran, Aliza Heer, and others.