The duo announced their split last October after Kutcher allegedly cheated on the 49-year-old actress, but haven't filed for a divorce yet.
Now they have booked a retreat on the advice of Berg and are planning to emotionally reconnect, reported Contactmusic.
"Ashton has booked a private lodge up Big Bear mountain in Southern California for the two of them. On Yehuda's advice they will have separate bedrooms and are not to have any physical contact for the time they are there," a source said.
Berg has also encouraged the pair to do daily meditations on the mini break.
"Yehuda told both of them they need time together to reconnect and block all outside influences and opinions out. He has been encouraging them to do long daily meditations which they will be doing on this weekend away," the source added.