Hinduism is as such not an religion. Its in a general sense, a path to the self with the guidance of an Living Guru. Many do it with rites and rituals to elements & / or powerful Gurus & Beings that have left their bodies.
Its also said that everyone is a born Hindu, doesn't matter in which part of of the world.
So you can practice Hinduism, I guess there is no need to officially convert too.
Its as free a religion that you can come across, almost bordering, the jump into true spirituality,