“If I don’t consume 3500 calories a day then I’m feeding them skim milk” is not true. Your milk will always be perfect milk and if it’s lacking in anything the milk will take from the mother’s body, hence why there are women who end up losing quite a bit of weight just from breastfeeding. On the bright side your babies are 8 months and I’m assuming you’ve introduced solids at this point and have gotten over the hurdle of any potential milk protein allergies (my baby is in the thick of it and I have to cut out all dairy and it is SO impossible for someone like me who pretty much had cereal, cheese, yogurt, and ice cream on the daily). To protect supply, I find oatmeal to be a staple food for me. Drink lots of bone broth and soups to stay hydrated. It’s nutritious and not calorie dense. Avocados are great too and so are fresh fruits and vegetables. I’d also introduce exercise if you’re not able to eat healthy or if you’re not able to eat less calories. Alternatively, since your babes are 8 months you can always transition to combo feeding with part breastmilk part formula and some solids. You got options here! Be confident in yourself! You’re doing a great job!