Advise Please about my 8 week old bunny who isnt eating anything at all. Just need some advise please. thanks ?

Hello, ive got an 8 week old bunny and im a bit concerned as she hasn't been eating for the past 2 days. I introduced her last week into my existing bunnies cage and theyve been great together,having cuddles and licking eachother. However shes not eating ANYTHING and im beginning to worry. She has been drinking today as ive moved her from the hutch and inside the house to keep a close eye on her. Does anyone have any advise to what may be the problem? I dont know if food aggression has taken place,but ive tried her with a new bowl so that she cant smell the other bunny on it, new water bottle etc.Please help