A few additional questions that'll help folks weigh in: 40+ isn't necessarily helpful, because for many women, there can be *huge* difference between 40 and 42, for example. Second, follicle count isn't only one factor to consider. AMH is also important. Do you know that number? And yes, follicle count can vary month to month, but it's not likely to go from 2 one month to 15 the next. You can have DOR and still be a candidate for IVF. Will you be successful? It's really about luck, which is hard to hear and so so hard to experience. My experience with SGF is they'll go right to donor eggs if they don't think you'll be successful with ivf and your own eggs, while CCRM will definitely give you space to try, sharing your likelihood of success. I'm pretty sure that's also the case at Columbia, too.
Hope that helps! Good luck!