I am so sorry that you are having these problems. Your tissue is not supporting the weight of your current implants. You could consider going smaller with a lift and mesh of an internal bra. Some tissue once stretched never holds well. It is not really possible to know whose tissue will...
Just based on your photos, you will need a lift, especially if you lose more volume with weight loss. Once implants are replaced and you are lifted, if you have any indentations, fat grafting can be done later.
Through revision surgery, it seems that the current rippling can be improved to some extent by partially closing the implant pocket in the area where the tissue is thinning, changing the diameter of the implant to a smaller one, and transplanting autologous fat in the area where the tissue is...