In the MARCA website there is a video with Ricky practicing jump shots, from 16 oct.

In youtube it's here, and he can be seen jumping while shooting (not that high, just barely losing contact with the floor) while he is actually making those baskets. Really short clip, but good news nonetheless.

In the previous video from oct 8, he can be seen in a shootaround but he was not jumping, just shooting with his legs on the ground.