What can I do if a mother has no contact with her 23 month old son for 2 months and he lives with me?

C an you explain a little more, your questions is not clear enough to consider an answser or an opinion.

The mother has no contact with her toddler, why ? Because he lives with someone else, why ?

You please elaborate on your question..

Who are you ? The father, a aunt, some stranger off the street she left the child with ?

Grandchild taken after 1 year w no contact can I get him back