K.C.
It's going to feel like forever. I think it was close to a year before my daughter got it down and wasn't scared. She would scream/cry/you name it to not go poop. Be absolutely miserable. I thought she had something seriously wrong with her. Well she did, she was full of poop and it hurt. I know one thing that helped some was giving her miralax in her cup of whatever once a day. It helped to keep it soft so it would come out and she couldn't hold it in.
She has finally gotten it all of the sudden and she goes by herself. Her thing is mom don't watch me.
My 5 year old son had no problems with all potty training. He didn't like to be dirty so the accidents were minimal. My problems with my 3 year old were frustrating cause my son breezed right through.
Good Luck and give them time...that's a big milestone for such a little person. Just try to keep your patience and know that you are not alone!