wayneri, yes, testosterone deprivation lowers the body's production of erythropoietin (EPO), a hormone necessary for the production of rbcs. Ask your physician to prescribe EPO to bypass the need for testosterone.
Abiraterone can also lower blood sugar levels. Make sure they are testing you frequently. I'd want testing for iron, b12, blood sugar, and oxygen levels in addition to the CBC. Lower RBCs are common with ADT but are often mild. You might benefit from oxygen supplementation for now.
Sorry for your struggle. I think you'll get help.