Jolly along
Definition 1 of 1
Pro Tip 1/3Casual Encouragement
Used when motivating someone in a friendly, non-pressuring way. 
When she hesitated to join the game, I jollied her along with a warm smile.
Pro Tip 2/3Positive Vibe
Implies a cheerful or upbeat approach to persuasion. 
He needed a mood boost, so we jollied him along by recounting fun memories.
Pro Tip 3/3Subtle Persuasion
It's about influence without direct pressure or obvious argument. 
I'll need to jolly her along with gentle hints if we want her at the surprise party.