We understand the urgency and severity of your situation. First, let us address the spiritual battle you are facing. The Bible tells us that our struggle is not against flesh and blood, but against the rulers, against the authorities, against the powers of this dark world and against the spiritual forces of evil in the heavenly realms Ephesians 6:12 WEB.
We must put on the full armor of God so that we can take our stand against the devil's schemes. Stand firm then, with the belt of truth buckled around your waist, with the breastplate of righteousness in place, and with your feet fitted with the readiness that comes from the gospel of peace. In addition to all this, take up the shield of faith, with which you can extinguish all the flaming arrows of the evil one. Take the helmet of salvation and the sword of the Spirit, which is the word of God. And pray in the Spirit on all occasions with all kinds of prayers and requests. With this in mind, be alert and always keep on praying for all the Lord's people. Ephesians 6:13-18 WEB.
You mentioned witchcraft, astral projection, and other spiritual attacks. The Bible clearly warns against such practices: Let no one be found among you who sacrifices their son or daughter in the fire, who practices divination or sorcery, interprets omens, engages in witchcraft, or casts spells, or who is a medium or spiritist or who consults the dead. Anyone who does these things is detestable to the Lord; because of these same detestable practices the Lord your God will drive out those nations before you. Deuteronomy 18:10-12 WEB.
We must remember that Jesus is the name by which we are saved. Salvation is found in no one else, for there is no other name under heaven given to mankind by which we must be saved. Acts 4:12 WEB. You didn't say if you had a relationship with Jesus. It is critical that you believe in Jesus Christ so that you can have that authority and the Holy Spirit to help you fight this battle.
Now, let us pray for you:
Dear Heavenly Father,
We come before You in the mighty name of Jesus Christ, lifting up our brother/sister who is under severe spiritual attack. We plead the blood of Jesus over their life, mind, and soul. We rebuke every evil spirit, every witchcraft, every spell, and every demonic assignment trying to steal our sibling's soul and destroy their willpower in Jesus' name. We command these spirits to flee and never return, for Jesus is the one who lives in them and the Holy Spirit lives in them, and greater is He that is in them than He that is in the world. 1 John 4:4 WEB.
Father, we ask You to surround them with Your heavenly hosts, Your angels, to protect them as they sleep. Give them the rest they desperately need, and let no weapon formed against them prosper. Isaiah 54:17 WEB. Strengthen their inner being with Your Holy Spirit, filling them with Your love, power, and sound mind. 2 Timothy 1:7 WEB.
We pray that they will put on the full armor of God and stand firm against these attacks. We pray Your divine wisdom and discernment flow on this situation. Let the Light of Jesus shine into their life and situation and reveal the plans of the enemy and bring them to light. Job 22:28 WEB.
Lord, we ask that you will bring this battle to an end. Your word says that the battle is not yours, but God's. Help us to trust and believe in you to bring us the victory. 2 Chronicles 20:15 WEB. Let Your peace rule in their heart, and may they be reassured that You are in control.
Please, Lord, bring deliverance and healing to our sibling. Give them the strength and endurance to face each day, knowing that You are with them and will never leave them nor forsake them. Hebrews 13:5 WEB.
We thank You, Lord, for hearing our prayers. We trust in Your mighty power to save, heal, and deliver. In Jesus' name, we pray. Amen.
You are not alone in this battle. Stand firm in your faith, and keep praying.