Welcome to HealthcareMagic
As per your wife's report ( FSH and AMH) egg store and quality is poor. It can be improved in certain cases with use of DHEA tablets. Your wife has already tried it and still only one follicle is growing. More over you have shortage of sperms so i would suggest you to go for ICSI
( Test tube baby ) treatment with donor eggs. Poor quality of eggs leads to low success of test tube baby treatment also, so going ahead with donor eggs will be good option. You can discuss with your doctor regarding further management and options available.