What plan does Friar Laurence devise for Juliet what reservations does Juliet have about this plan?

Friar Laurence devises a plan for Juliet to fake her own death by taking a potion that will make her appear lifeless. Juliet is initially hesitant, fearing it may not work, or that she will wake up alone in the tomb and go mad. She is also concerned about the consequences if the plan fails, such as being buried alive or waking up to find herself in the tomb with no way to communicate with Romeo.