
Quoting
Mr. Knowitall
Based upon what you've told us so far, unless mom is going to request that you become guardian, you will not get custody based upon your own petition. You've given no evidence that mom is unfit, that you have standing to try to take away her child, or that you can show by clear and convincing evidence that the child should be placed with you. You've also told us nothing about dad, who would be first in line to get custody if mom is deemed unfit.
The drug use is being investigated, and may or may not be grounds for the child's removal, but you haven't yet shared any facts that would compel a finding of parental unfitness. What else do you have that would show unfitness?