Hey Supriya!

The most popular book for embryology is Langaman as it has best content over IB singh and Vishram's book (VS book). But sometimes, it becomes difficult to imagine over the diagram in Langaman book, so I'll prefer IB singh book over VS book. As the diagrams are easily explained and you can copy them  in the exam. But I would strongly suggest you to watch lecture videos of embryology for better understanding.

Thankyou!