Can we add dependent after scheduling interview

I was able to schedule L1B +L2(spouse) interviews in May 2022. Recently I delivered a baby (mid April) whose passport I was able to get under tatkal . I have submitted her ds 160. Given the unavailability of slots. Is it ok if I request the consular officer to consider adding her as well during our interview ? Is there any email I’d to the embassy I can drop other than the generic provided in the cgi portal.

Child below 14 will qualify for dropbox however you can call VFS and get some guidance if appointment is possible.