There's a good few of us that are single parents. Even a few of us dads, raising our own. We know what it is like to juggle the rest of life while putting God first and our kids 2nd. Remember to take care of your own needs (and not too many of your wants) before taking care of the kiddo(s) - otherwise you will burn out your own flame and not be able to give your family what it needs.
Welcome to CC. As long as you don't try to pick up folks here, you'll probably fit right in (it's generally frowned upon, though there are some who have found love here when not looking).
My custody battle lasted 26 months.
Remember these things: Always lock your house and car, All The Time. (Then No One can plant anything. It happens.) Even if inadmissible, a magnetic GPS tracker on your car is CHEAP. Don't go anywhere your ex could use against you. Whatever it is, don''t say it in a text message or email, unless your lawyer and judge would look at it and be proud of you for saying it. Conversely, don't talk on the phone with your ex, tell him text or email only. You may trap him with his own words, and you will never have to wonder if he is recording the call to use against you. Keep an eye on your local/state court records public access information website - this can alert you to filings that you've not yet been served as well as let you know if the ex gets picked up for something. Make absolute certain you are fighting this for the sake of the child, not out of malice for his father. FORGIVE THE FATHER for whatever brought yall to this point...if you can cut that out of the situation and focus on the child, then you're ahead of the game. Remember that if your ex (or soon to be ex) is falling/has fallen away from Christ, or if they are an unbeliever, YOU have the responsibility to handle this bad situation with Christian Love. Don't be a doormat, but do be a Christian. The example you set in this situation may be what determines whether or not he ever gets his life right with Christ. It's a big deal. Treat it as such.
Again, welcome, sister.