
Quoting
Xena
The CS is set according to the state guidelines based on incomes.
If the $900.00 is the guideline amount, you will have to figure out some way to pay it and pay your other bills at the same time.
I realize that this comes as a shock to you, especially when you were paying far less than guideline amount, and that ex agreed to accept no money at all for the last 3 years. However, it is what it is, and you have not posted anything that would allow for a deviation from the guideline amount.
You should look into getting a second job, or if you are in a situation where you could move to a less expensive home, or sell your truck and buy a less expensive one, etc.
You didn't mention any retro support, so you should consider yourself fortunate that you aren't being also hit with many thousands of dollars in retro support.