Sayyed Mohammad Al-Musawi,
Sayyed Mohammad al-Musawi is originally from Iraq and heads up the World Ahlul Bayt Islamic League in London. Other than being involved in various humanitarian projects, he frequently responds to religious questions. In the past, he has also spent significant time in India guiding the community.
Baptism is an old practice came from ancient cultures including Hinduism and idol worshipers. It is claimed among Christians that Prophet John baptized Prophet Jesus but there is no authentic evidence available. We do not have any evidence that any prophet was ever baptized.
Islam does not allow acts which have no evidence.
You should not take any part in any worshiping practice which has no authentic evidence.