what does 'real' even mean? if you are experiencing something consistently, that responds to your interactions, its as real as anything else imo. does something being temporary or conditional on certain phenomena make it 'not real'? because in that case any living being is 'not real', a mere transitory hallucination that will fade and be forgotten in time like an unremembered dream. maybe the characters in your sleeping dreams do in fact have their own subjectivity independent of your own conscious identity, 'subsystems' running on your 'hardware', as mortal and fallible as any living person. does lucidity or clarity or vividness determine reality? if so, then what about people who experience vivid, clear, lucid 'hallucinations', or people (perhaps with conditions like alzheimers or dementia) who experience waking life as an incomprehensible whirlwind of phenomena? is a lucid dream 'more real' than the dreams you do not remember? 'reality' is kind of a meaningless concept, engage with what you are capable of engaging with and don't worry so much is my advice.