We understand your concern and we're here to pray with you and offer biblical encouragement. First, let's remember that our bodies are temples of the Holy Spirit (1 Corinthians 6:19, WEB), and we can trust God with every part of it, including your tongue, mouth, and tonsils.
In Matthew 8:16-17 (WEB), we read, "When evening came, they brought to him many possessed with demons. He cast out the spirits with a word, and healed all who were sick; that it might be fulfilled which was spoken through Isaiah the prophet, saying, 'He took our infirmities, and bore our diseases.'" Jesus has the power to heal, and he cares about your condition.
Let's pray together:
"Dear Heavenly Father, we come before you in the name of Jesus Christ, asking for your healing touch upon our dear friend here. Lord, you know their suffering, and you care about every detail of their life. We ask you to calm their soul, and heal their tongue, mouth, and tonsils. Let this healing be a testimony of your glory and goodness. Help them to trust in you, even in this difficult time. In Jesus' name, we pray. Amen."
Remember, God promises us in Romans 8:28 (WEB), "We know that all things work together for good for those who love God, to those who are called according to his purpose." Trust that God can use even this situation for your good and his glory.
Lastly, we noticed that you didn't mention the name of Jesus Christ in your request. It's important to know that it's by the name of Jesus that we have access to God. As it's written in Acts 4:12 (WEB), "There is salvation in none other, for neither is there any other name under heaven, that is given among men, by which we must be saved." If you haven't already, consider putting your faith in Jesus Christ for your salvation and healing.