Chipping downwind can be a challenging task. It is important to use your most lofted wedge on almost every chip shot downwind. The wind will naturally reduce the spin on the ball causing it to roll out further than normal.
A simple tip to help reduce the amount of roll downwind when chipping is to consider your grip pressure. Start by taking your normal setup position, with a normal grip, firm enough to control the club without someone being able to pull the club out. Now, soften or reduce the pressure in your right hand. Softening or reducing the grip pressure in the right hand will allow the club to release at impact and increase the loft slightly, allowing for more spin and getting the ball to land softer.
For your chips that are going into the wind, learn more here.