My almost 7 year old is kind of like that too. Both of my kids are very protective of me. They are both boys and when dad is not home they want to be the "MEN" of the house. I am thankful for them both. But it is too much for my little one to feel like he needs to take on. I pray with my kids every night when they go to bed, and I usually pray for the little one not to have bad dreams and to not have any unnecessary FEARS. The fear thing is slowly started to going away. With God ALL THINGS are Possible.
Hope this helps,
Blessings to you and your family,
K. J.
" The Lord Bless you and keep you; The Lord make His face to shine upon you and be gracious to you; The Lord turn His face toward you and give you peace." ~ Numbers 6:24-26