Berry Bush growth

Hi... tried to search and even used ChatGPT but no luck.. i even watched the video from MCreator but that one is old and dosent work it seems like but.. i have a berry and i want to make it grow like BerryBushes in vanilla.. i made all the stages  but can't for the life of me find anny tutorial on how i can make it grow and replace with next stage and after fully grown i can right click it to collect 1-3 berries

https://ibb.co/mSjBfb4

it worked when i had it as a block but now i made it as a "plant" it dosent update am i doing annything wrong?