Are you abusing methamphetamine?
This is the most important problem. If you don't deal with this problem, then nothing else matters, you will not be able to be with your children. Drug addiction is a progressive abuse, until you go to treatment things will get worse and worse until you lose your children completely.
Drug treatment comes first.
After you deal with this, there may be some things you can do legally to respond to your record. You can talk to a lawyer about this. But until you complete drug treatment it doesn't make any sense to even do this.