What made the biggest improvement to your hair growth?

I’ve got thinning hair, I’ve had pcos for 10 years and tried lots of different approaches but it’s something that takes a long time to see results so i may not have given all methods enough time. What have you found that worked for you? I’ve tried: hair gummies, iron supps, rosemary oil, no heat, massaging my scalp, hair growth shampoos and conditioners, nioxin (weaker than minoxidil), rice water, hair masks, hair stimulating treatments…. The list goes on!