Weight loss and getting pregnant

Hey Everyone!

I was wondering if anyone had some tips for losing weight prior to getting pregnant. I am on my weight loss journey and have been told by my specialist that I need to ideally lose 12 more pounds before having either IVF or IUI. Also I have PCOS. However, I personally want to lose 20+ pounds before anything truly happens. In the last 3 months I have almost lost 10 lbs just by watching what I eat and intermittent fasting. I know intermittent fasting isn't good to do once I get pregnant so that's why I'm looking for other methods or options. Any advice is appreciated.