Oral hCG is bogus. - hCG needs to be injected
hCG acts in minutes, it takes time for it to alter gene expression and bulk tissue changes to occur that will recover or improve testicular function. The time involved relates to how much physical recover is needed. If the testes are otherwise ready to go, then hCG can increase T levels quite fast. FT will increase in a couple of hours if the testes are that good. It will take time for FT to saturate blood and cells in the body.
Much of the FT will convert to SHBG-T that is functionally inert; so TT will take longer to build, but that is really not a goal in terms of what you will feel. Many?most feel a boost in mood with hCG, which can last a few hours or days. This really seems to be transient and subsequent injections do not do that; you can't really judge this book by its cover.
A few [rare] guys seem to create a lot of E2 with 250iu SC EOD and they should try a smaller dose. But most do not have any problems with 25oiu EOD; which is a replacement dose equivalent to a young normal male's LH actions inside the testes. Large doses of hCG probably will create high E2 levels for any guys with LH/hCG responsive testes; which cannot be reasonably managed with anastrozole due to basic competitive drug considerations in the context of very high T levels inside the testes.
Guys who have such problems with 250iu hCG can perhaps be considered hyper hCG responders. With the same issues in mind, the same problems can probably occur with SERM doses that are too high that create high LH levels and perhaps some are hyper LH responders compared to others. Some of these things may never be resolved with clinical research data. However, the implications can nevertheless provide good operating assumptions.
Liquid oral anastrozole preparations do work well and provide by-the-drop dosing flexibility.
Your E2=12 is strangely low. I think that you should wait and get E2 tested after introducing hCG. No harm in having the anastrozole in hand or knowing that you can get a script in short order.