Porcelain veneer/eroding enamel (Photo)

Hi everyone, For context, I had 2 kids close to each other and breastfed. My front teeth eroded and it became very see through when I had my 1st, 3 years ago. I had to get veneers (my front 2 teeth) now the next two over in each side are becoming “see through” as well, I think only fix is 2 more porcelain veneers. My concern is, will this keep happening to all my teeth? Why does this happen and how can I prevent it? Is this a lack of something or bad genetics? Please help, i’m 32 and healthy!