Small, deflated breasts after nursing, would 200-250cc fill them back up? (Photos)

Hi and welcome to our forum!
From your photos, I note that the breasts are somewhat asymmetric in size and are of ample volume. There are moderate stretch marks. The distance from the top of the breastbone to the nipples is increased, there is loss of superior pole breast volume, the nipples reside above the fold at the bottom of the breasts and there is minimal-moderate sag.
Stretch marks indicate the presence of permanently damaged overstretched skin usually occurring during pregnancy or significant weight fluctuation where when pregnant or overweight, the skin's dermal elastic fibers stretch and ultimately rupture, resulting in the loss of elasticity (like an old rubber band) and the development of streaks on the skin surface. The skin will stretch over a greater surface area and will predispose to further sagging. This is not simply deflation.
You note that you prefer small breasts. Augmentation may not be the route to take as it will do the opposite and will not sufficiently fill the upper poles of your breasts. A mastopexy will elevate the nipple areolar complexes into anatomic position, will remove excess stretched out skin, will restore upper pole breast volume, and will conify the shape of the breasts.
Visit a board certified plastic surgeon for evaluation and discussion.
Best wishes.

Hello, thank you for your question. Implants would just help add volume. Speak to your plastic surgeon about your options. Be sure to bring in some wish photos. check out our before and after gallery.

During the consultation, you will be examined and measured to see if a lift is needed and what range of sizes that will fit your frame and tissue.