That is not the same as being called "the Father." "I AM" is the name of God as first revealed to Abraham and also introduced to Moses, also claimed by Jesus in the Gospels.
It is the same. Just because you say it is not does not make is so.
Why don't you answer the question?
Is Jesus the I AM in the Old Testament?
Can you please show me where the Lord (that is, God) is called "The Father" in the Old Testament?
I can show you more, but are you trying to diminish the scripture where God says Jesus will be called 'Father'?
How many scriptures do you need?
If you do not understand little, how will you understand much? You already do not understand that Jesus is the I AM in the Old Testament and that the I Am is God the Father.