How can someone who was raised Hindu and has a strong inclination towards Islam and wishes to declare his affiliation with the Islamic world embrace the religion of Islam?

You must take the practical step of uttering the two testimonies (Shahadatayn) and practicing worship in Islam. There is no benefit in further waiting, because delay will cause you to miss out on great rewards. So proceed and do not hesitate, for whoever knows the truth sacrifices for its sake and endures for it.