Tamoxifen is mainly geared toward gyno prophylaxis. It does have the secondary function of signalling for HPTA upregulation at the hypothalamus, but per wikipedia, this is reported to be minor. Clomid on the other hand was created to upregulate HPTA signaling for fertility treatment, and that's the drug that primarily restarts one's HPTA. Why not just use tamoxifen as needed (ie if nipples get sensitive) instead of planning to dose it each day. If anything, clomid is the only one that should be dosed each day for 2 weeks or so because that's what really "igniting the engine again". Tamoxifen is more of a "spark-insulator" that prevents "damage from reignition"