have you considered natural cycle IVF? the success rates are lower but for over 35 with egg quantity/quality issues they seems to be doing much better. I was also hoping that there is a natural way to improve egg quality, I read tonnes of materials and books on the subject and tried lifestyle changes, acu/herbs, changed my diet, yoga etc. it's all good stuff and I am sure it helps because when we did the scan they noticed a very good blood flow to my reproductive organs which is basically the most important thing in improving the egg quality. having said that, the actual egg quality is going to continue to decline with age but what you improve is the environment where eggs develop which indirectly sort of help improve their nourishment and quality.
also, I would discourage from using donor eggs until you have your own. read Zita West' books where she included interviews with various fertility specialists and they say that until you have your own eggs however small amount you should be able to get pregnant with IVF but you just need the right treatment/protocol/meds. if one clinic cant make it happen for you try a different one, do not give up.
I am drinking fresh wheatgrass shots every day and eating lots of greens, drink mate tea and do all other things to make my body more alkaline which indirectly improves fertility and egg quality.