I thought you might be interested to read about others who had dreams in the Bible. It does seem that God does use this method for very important events.
http://www.jesusvisions.org/chapt12.shtml
By examining the dreams recorded for our edification and admonition in Scripture, we understand that God speaks through dreams to all manner of both men and women—kings, prophets, swindlers, cattle ranchers, bakers, butlers, soldiers, a man betrothed to be married, or the wife of a government official. Here are the dreamers found in the Bible
God visited Abram in a vision that segued into a dream during which the LORD established the Abrahamic Covenant. This teaches us that God can make transactions with his children through our dreams. God therefore sometimes accomplishes very significant events within dreams. (Genesis 15)
Abimelech, a ruler, was prevented from sinning against Abram’s wife because of a warning in a dream. (Genesis 20:3)
The patriarch Jacob dreamed of a supernatural ladder attended by angels and stretching into Heaven. He saw the Lord, who communicated comfort and direction and made a covenant with Jacob (Genesis 28: 12)
Jacob received in a dream the strategy to increase his livestock wealth. (Genesis 46: 2) Jacob received direction from God not to fear to travel to Egypt, for there in Egypt God would make of him a great nation. (Genesis 46: 2)
A strong-willed man, Laban received a directional warning from God not to hinder or speak negatively to his son-in-law, the Biblical patriarch Jacob. (Genesis 31: 24)
Joseph dreamed prophetically of his future greatness and leadership when he envisioned his brethren as sheaves make obedience to his sheaf. (Genesis 37: 5)
Joseph dreamed prophetically a second time of his family represented by the sun, moon and stars bowing down to him. (Genesis 37: 9) Joseph’s subsequent experience of rejection and hardship teaches us that it is not always wise to share our dreams prematurely with others. Egypt’s chief butler dreamed prophetically a positive dream concerning his restoration and destiny. (Genesis 40: 9)
The chief baker of Egypt was also given a prophetic warning dream. (Genesis 40: 16)
Egypt’s Pharaoh was granted a dream, warning of an impending famine. (Genesis 41: 1-4)
Second dream of Pharaoh to emphasize that famine was surely coming. (Genesis 41: 5-8)
Gideon providentially overheard the dream of a Midianite soldier, assuring Gideon of victory in battle. (Judges 7: 13)
God appeared to King Solomon in a dream to test his desires; Solomon communicated back to God asking for wisdom, and his desire was rewarded plus more. This Scripture teaches us that it is possible for God to grant gifts in our dreams. (1 Kings 3: 3-15)
Eliphaz, one of “Job’s comforters,” described a visitation from a spirit in a night vision and a voice that he heard from God. (Job 4: 12-21)
Job experienced nightmares and stated that dreams symbolize the short-lived pleasures of the wicked. (Job 7: 14; 20:8)
Nebuchadnezzar dreamed prophetically of world kingdoms (Daniel 2) and concerning himself. (Daniel 4)
Daniel dreamed prophetically of destinies of kingdoms, received much information concerning Messiah, and possessed the power to interpret dreams. (Daniel 1: 17; 2: 1-3; 7, 8, 10: 5-9)
The prophet Joel affirmed that dreams and visions would be one of the Last Days provisions of the Holy Spirit (Joel 2: 28)
In the New Testament, St. Joseph was instructed in a divine dream not to fear to marry the Virgin Mary because her child was conceived by the Holy Spirit (Matthew 1: 20) Joseph, as head of the household, was warned in a dream to escape with Mary and the Baby Jesus to Egypt. (Matthew 2: 13)
Joseph was granted the “all clear” in a dream to return home (Matthew 2: 19).
Joseph received news of wicked King Herod’s death in this timely dream.
The Wise Men who traveled to worship Jesus were warned in a dream to return in another direction to evade the wicked designs of murderous King Herod. (Matthew 2: 12)
Pilate’s wife warned her husband, the Roman governor, not to harm Jesus because of what she had suffered in a dream. (Matthew 27: 19)
The Apostle Paul received specific guidance through a dream by a man beckoning him to bring the Gospel to Macedonia. (Acts 16: 9) Thus Christianity, which began as an Eastern movement, spread westward to Europe because of a dream.
Paul was assured in a dream that it was God’s plan and purpose for his life that he should take the Gospel to Rome. (Acts 23: 11)
Paul was given assurance of safety for himself and for all sailors during shipwreck. (Acts 28: 23-24)