I am sorry this is happening to you.
As others mentioned… if you haven't followed up on some of those suggestions... it is time to get more serious about taking matters into your hands.
YOU are putting your child at risk.
There is NO dog worth hurting one of MY children... and I would hope others feel the same about their own... ESPECIALLY a small child that cannot defend itself.
This dog MUST be removed from the current situation and likt Otis, placed in a calm adult home. If you can't do that, the forever home is about where he would be going.
What happens when he gets turned in as a biter and/or he bites someone so seriously you are SUED?????
Things like this happened.
Don't think you know people enough they wouldn't... because your insurance company would fight tooth and nail NOT to pay any claims... that is how they make their money.
Please listen to the suggestions you are being given.. they are good ones... from people that have been in similar situations.
Please let us know that the safety of your child is paramount and you are going to work on this situation.