Bonjour I have become very good at English. I am only level three. When should I start translating sentences? Like 5-7 or when do people advise to start immersion?
If you feel confident in English, you can start right now. There is no fixed starting level for Immersion. Some people like to wait until they finish the tree, some people dive in as soon as possible.
Start by translating sub-titles and bibliographical entries that are only a few words long. Avoid changing other people's work until you are a lot further along. Good luck!