Since your periods have become regular over the last 3 months, it is a good sign that your treatment is working and your hormones are becoming balanced. However, medicines like Diane 35 are usually given to regulate cycles and are not continued when actively trying to conceive, so the timing to stop them and start planning pregnancy should be decided by your gynaecologist based on your current hormone status and ovulation pattern. In most cases, once cycles are regular, doctors may stop cycle-regulating pills and start ovulation-inducing treatment (if needed) or advise trying naturally during the fertile period. You should not continue or stop these medicines on your own, as some are meant for preparation rather than conception. The best step now is to follow up with your doctor to review your progress and plan the next phase of pregnancy, ensuring the right timing and treatment for better chances of conception.