[Runesmith]

Eating foods containing phytoestrogens will not make you feminine. Phytoestrogens bind very weakly to estrogen receptors, so unless you plan to eat a ton of soy beans, your testosterone will simply laugh at the feeble attempt. If there is a significant effect, you can be pretty sure that soy beans would be FDA regulated as a medical product.

Body fat is a producer and buffer of estrogen. So becoming obese makes men feminine (or at least, reduces the effects of testosterone). However, I don't think you would want to go down that path.

However, low-dose estrogen pills, usually prescribed to teens with acne for example, might be an option you might want to consider. Short courses of low dose estrogen pills could make your behavior more feminine, without a big change in physiology. However, this would need to be carefully titrated.