If you are getting night sweats etc returning and there is no other reason for them ( eg thyroid function, diabetes etc - think that also causes temp regulation dysfunction) then you do need to increase oestrogen. If you've had a hysterectomy do you know where you are in menopause - or perhpas you also had your ovaries removed? If you kept them then the hot flushes are an indication you are further towards menopause, and need more oestrogen. If you had a surgical menopause maybe you've lost a lot of weight recently? This would reduce the amount of ostrogen available to the body ( estrone is stored in fat cells and can be converted to estradiol in the body).
Once your (hormonal) sweats and flushes are controlled then testosterone may well help. An indication that this mught be needed would firstly be low or no libido but as T levels decreased you may feel fatigued, with muscle aches and pains especially after exercise.
Maybe increase to 1 pump per day too if your doc is in agreement?
Hurdity x