My 3-month-old baby seems to have lost her voice. When she cries or makes noises, her voice is much higher pitched than usual. What should I do?

It is possible that the baby's hoarse voice is due to mucus secretions in the throat. To help the baby regain her voice and prevent the situation from worsening, you can try a technique described in a document provided. This technique involves using a specific amount of solution in each nostril, several times a day for at least 5 days.