Omg they used Angad and Kripa's baby in Vaidehi too... Check out the link and scroll a lil bit down and u'll see a picture of a baby it looks just like Angad and Kripa's baby. I think its the same baby thats used...
Check it out: https://www.indiaforums.com/forum/vaidehi-ek-aur-agni-pareeksha/305689/photo-box-vaidehi