NOPE
Can you learn English while sleeping?
No, unless your dreams come with subtitles and a grammar teacher.
Learning English while you sleep sounds like a magical shortcut, but sorry to disappoint. Your brain doesn't pick up new languages passively during sleep. Effective language learning requires active practice and focus while awake, not some dreamy audio playback trick. So, stop hoping to snooze your way to fluency and put in the work when you're actually conscious.