low estrogen levels (i'm on HRT so have researched this) does impact both leptin and omega 3 levels. Estrogen promotes insulin and leptin secretion which can help regulate blood sugar. Omega-3 index will often falls in menopause due to less estrogen and that can trigger more inflammation, vasospasm, and give you a lower migraine threshold.

To help my situation, I take Carlsons Elite Omega-3, one capsule 2x day (I do 2x a day as more than 1,000mg at one time can cause heart rhythm blips). I also have a small snack before bed of 1/2 cup greek yogurt with 1TBSP of Flax seed stirred in and 3 sliced strawberries mixed in. I eat the snack about 15-30 mins before bed, and I have seen from my CGM that it is helping prevent the severe low dips in blood sugar throughout the night.

I absolutely agree with you that low levels of estrogen are a key contributor to migraines, and I say this because I always know when my levels are low as my headaches and migraines increase. Some additional supplements you may want to discuss with your doctor that can help are: Magnesium glycinate, Riboflavin (B2), CoQ10, increase omega-3 but limit omega 6 (it promotes inflammation and can increase pain sensitivity), and increase your protein intake.