Well, as a very blunt rule of thumb, tender breasts = excess something, it's rare for breasts to feel tender being undermedicated. The likelihood that'll you'll make them even more tender by adding more oestrogen, is relatively high. Because you're using all 3 hrt replacement hormones, it's tricky to determine which of the hormones is causing the tenderness, yes, it started not long after adding T, but that could be a temporary effect of adding T. Breast tenderness is almost always caused by excess oestrogen or progesterone. After your bleed, you'll know where you stand on the reduced dose plus T. If any low oestrogen symptoms re-start, then up the dose again, but upping it now wouldn't reduce breast tenderness, not in my experience.