It seems like, YES.
YES, because Jesus did preach many of the beliefs of Buddha.
The Buddha like sayings by Jesus, were said by Buddha 500 or so years before Jesus. Jesus and his ways were much like those of Buddha.
Buddha: “Consider others as yourself.” Dhammapada 10:1
Jesus: “Do to others as you would have them do to you.” Luke 6:31
Buddha: “Abandoning the taking of life, the ascetic Gautama dwells refraining from taking life, without stick or sword.” Digha Nikaya 1:1.8
Jesus: “Put your sword back into its place; for all those who take the sword will perish by the sword.” Matthew 26:52
BUDDHA: “Perishable is a city built on sand.”
JESUS: “A foolish man, which built his house on sand.” Matthew 7:26
BUDDHA: “Confess before the world the sins you have committed.” (31)
JESUS: “Therefore confess your sins one to another, and pray one for another, that you may be healed.” James-5-16
BUDDHA: “Consider others as yourself.” (33)
JESUS: “Do to others as you would have them do to you.” Luke 6:31
These are only a few.
Could Jesus have studied Buddhism during his missing 3 years?
The above is all new to me, so I decided to take a COURSE in Buddhism to see what all I can find that would lead me to believe if Jesus followed Buddhism…since I always have to find my own facts and DO NOT FOLLOW HANDED DOWN OPINIONS AND BELIEFS.