Rob and Blac had been planning to get married by the end of the summer, Kris Jenner advised them to move it back up to July again, according to a family source.

The source also revealed to PEOPLE that the 27-year-old model will be hugely pregnant when she walks down the aisle next month.

The pair got engaged on April 4, and are certainly eager to make it official, “Rob is happier than ever” — which we're so thrilled to hear. “He's finally excited about life again…he used to be a goofy guy. Now that's coming back,” an insider told the magazine.