Skin patches are an excellent way to deliver hormones because they are absorbed 100%. Digestion impairs absorption greatly, because once digested the Liver Cleanses most of it out of you anyway. So if you want to reduce the amount of hormones you take, you may want to switch from skin patch delivery to oral. That will immediately reduce how much you get as you wean yourself off them.
It depends on the patch, but yes they do tend to deliver the most during the first 3 days and then taper off. You can put them on your shoulder or inner-upper arm and simply not immerse that in the tub when you detox bathe. It won't hurt the detox bath.
Have you checked out julia's Fem-Mate tincture? It might be a good option for you. www.sensiblehealth.com.