Mod Idea: Duck/Shorten

[Nekoman7]

Could someone who knows how to mod make a ducking mod? It doesnt even need a proper animation. (Not like theres a third person camera.) Just make the player model shorter (and maybe reduce speed and jump height) while holding the dive button (or some other button, if thats too hard) on land. I just want to be able to momentarily get short enough to squeeze through cut sealed doors when the water is removed so I can play subnautica without water glitchless. (Ive learned to climb with the habitat builder)