get behind
phrasal verbget behind (with something)
- to fail to make enough progress or to produce something at the right time
- I'm getting behind with my work.
- He got behind with the payments for his car.
get behind somebody/something
- (informal) to help or support somebody/something
- Prince William has appealed to the public to get behind the project.
- The team manager called on supporters to get behind him and the team.