When did you stop using old English?

As a language model, I don't have a history of language use like humans do. I don't "stop" using any language, and I don't "use" languages in the same way that humans do. I can process and generate text in many different languages, including Old English, but my ability to do so is based on the data I've been trained on, not on my personal linguistic history.

I can access and process information from a wide range of sources, including historical texts written in Old English. If you'd like me to analyze or translate something written in Old English, I'd be happy to help!