I have some ideas! I tend to lose a fair amount when I am nursing too. My thoughts:
We do sunbutter/nut butter on rice cakes. You could also dip apples in it.
Eat avocado. A lot of avocado. I'm not losing so much right now but I used eat 1/2 an avocado everyday-often with olive oil, sea salt and pepper on it.
Add more butter and oil than you think you need.
Snack on nuts.
Use coconut milk where you can. Use it in a smoothie, coffee or chai tea. Native...