need help trying to add new interaction to the game

hi!! i've been trying to add an interaction to my game that would allow mothers to breastfeed their toddlers after finding a mod by polarbearsims that does the same thing and then discovering its broken atm and doesn't appear to have custom animations for the interaction.

i can't for the life of me make sense of anything though. i tried following this tutorial step-by-step multiple times using the "carry_hug" interaction as a base without even changing it to increase hunger/social/relationships or anything just to see if it'll show up in the pie menu, but the interaction isn't appearing at all on sims or the mailbox or anything. i've googled endlessly, and i've searched through modding support discords and forums a million times trying to figure it out but i just can't seem to find what i need. i've just barely dipped my toes into modding/cc making so i'm really sorry if the mistake i'm making is obvious but i cannot figure it out lol

i've uploaded my latest attempt to google drive and linked it below on this post in case anyone might be able to help, and in case its necessary i'm using s4s version 3.1.6.2


drive.google.com/file/d/1RRQq_goMhDze_c4NUDQYgFT09pGUI4e1/view?usp=sharing