Acidentalmente fiz minha sobrinha de 2 anos tomar corticosteroides duas vezes hoje em vez de uma vez por dia

So I have a niece. She’s a two year old and was prescribed to take a Prednisolone corticosteroids. In the prescription, it was prescribed that she should take it once a day at 3.5 ml. My mother already gave her the medicine for today. However, later today I accidentally made her drink the same medicine. Should we skipped the medicine tomorrow? Or should I bring her to the hospital? what should I do? I was worried that this will have a bad effect on her. Thank you for your answers.