Though I use a number of important progressions for this skill, this is my favourite.
The gymnast can jump as high as they like. The goal is the front support position, not handstand. There is every incentive to shorten the body on the upswing.
A spotter is needed as they do sometimes swing too high to reach front support on their own.
This video is from Bermuda Gymnastics Association a couple of years ago. The gymnast is now Level 7 competing Giants very comfortably.
Click PLAY or watch it on YouTube.