How to make a custom baby mob from breeding(No Coding)

I've noticed that a lot of people have had trouble making breedable mobs that work properly(Myself included) and I'm pretty sure people haven't found out how to do it yet without editing the code(correct me if I'm wrong). So, I tinkered a bit in the procedures and I found a way to do this with a custom baby model.  Here are some steps:

1. Create the models: you'll need to make two models (for this I recommend tabula, techne, or blockbench)

                    1.You'll need an adult model. (if you are using a minecraft model for an adult then skip this.)

                    2.You'll need a baby model. This should probably be smaller than the adult model.

2. Create the two mobs: You'll need to create the actual mobs(the baby and the adult)

                   Adult: Create the adult mob and make sure it is breedable(notice: if you actually run the game at this point it will just be a baby/child mob with the same model as the adult mob)

                   Baby: Create the baby mob (OPTIONAL: if you want your baby mob to grow up then set up a timer procedure where it despawns the baby and spawns in the adult mob)

3.IMPORTANT: Create a procedure:

Get an if/do statement under flow control 

For the if statement put: (Is event/target entity child) and (Is event/target entity: the adult mob)

For the do statement put: (Despawn event/target entity) and (Spawn at x: x, y: y, z: z living entity: the baby mob)

I hope this helped if you have any problems please leave a reply to this forum so you can be helped.