No testing. The tests would only show that you are pregnant.
We know the LH_replacement dose of hCG. Research showed that 250iu SC EOD is effective.
Just use that. The result will be that the testes maintain size and firmness and the scrotum will hang normally. We do not care about how much T production results. TRT T dose is adjusted to achieve target levels.
High doses of hCG, or high LH induced by SERMs, creates a high level of T-->E2 inside the testes. T levels in the testes are very high compared to serum T levels. Thus anastrozole, a competitive AI, is very ineffective at controlling E2 generation in the testes and serum E2 levels are then largely not controllable.
Doses smaller than 250iu EOD may be effective for maintenance.