Jump-glide into 1x1 gaps with an Elytra on Bedrock Edition

This would be a simple bit of parity between Java and Bedrock, and a nice feature re-introduction from the Legacy Console days. Essentially, the player could use the smaller hitbox while gliding in order to fit into much smaller gaps than they normally could by temporarily jump-gliding until they fit into a 1x1 gap. Along with this feature, it would also be great if Bedrock Edition could receive the crawling mechanics from Java as a whole, including 1.5 block crouching and trapdoor-based crawling since the only current alternative on Bedrock is to use water and swim into the 1x1 gap.