I had an AMH of 0.79 at 38. Did one round of IVF at 39 (almost a year later), and got pregnant with twins on the first try. AFC was around 8-10 and I got 7 mature eggs.
I did take 200-300mg of ubiquinol per day for about 9 months prior to the IVF, because there are some studies that shows it improves egg quality.