Yavanna and Mahal knew that if they did not change the outcome of the quest to reclaim Erebor their children would not find peace in their after lives so they got together and came up with a plan to help their children.
"Yavanna dear are you ready to completely change history for our children?" Mahal asked his wife when he found her in her garden.
"Yes love I am let's do this so our children can have the lives they were meant with the one they were meant to be with," Yavanna answered her husband. With that they clasped hands and went to find a hobbit by the name of Bilbo Baggins who was nearing the end of his long life aboard the last ship to leave the Grey Havens.
Bilbo had just fallen asleep when he was visited by two figures dressed in white one dwarf-looking male with beads made of precious metals and gem stones in his hair and beard and the other was hobbit-looking female with flowers woven into her long golden-hued hair
"Bilbo Baggins we are here to help you rejoin your soul-mate by giving you a second chance at the journey to reclaim Erebor" the hobbit lady said.
"Who are you and how is that even possible?" Bilbo asked confusion written plain on his aged face.
"We are known by many names but the ones most used by our children are Mahal and Yavanna" the dwarf answered.
"Will I be the only one who remembers living this twice or will there be others to help me?" was Bilbo's next question.
"You will not be alone in this there will be others who remember and before you ask no we will not tell you who where's the fun in that," Yavanna answered.
"Then I except your offer my Lord Mahal and Lady Yavanna,"with those words Bilbo's world whitened and the next thing he knew he was waking up in Bag-End.