Joey Music

Hey guys!
My name's Joey.. I'm new to the forums.
I'm an aspiring young, freshman Musician at a University in the East.
I've always admired music, but had no background in studies before attending this college.

This post is in regards to an assignment I was given in my very first music class. I was directed to formally break down Mozart's symphony no. 40.

All aspects of the assignment have been completed, except one.

I am looking for help in determining SPECIFIC timings of the song, creating a simple formal diagram.

So far I, understand that it is sonata form, so I know that it will break down like this:
1) Primary Theme
2) Bridge
3) Secondary Theme
4) Development
5) Primary Theme Repeated
6) Bridge #2
7) Secondary Theme Repeated
8) Coda

HOWEVER- I can not determine exactly when the primary theme turns into a bridge, or when the second theme turns into the development, etc.

My question to you- can someone provide me with specific timings of when the formal diagram changes, so i can have a better understanding of what it truly means for the theme to change, and also so i will have a better understanding of ideas such as bridges?
(Example- primary theme.. 0:00 - x:xx.... bridge #1.. x:xx- z:zz.. etc.)

Any help would be appreciated.
Thank you,
Joe

Ps. here's the link for the piece-

Mozart, Symphony No. 40 in G minor, first movement - YouTube