Contested Step parent adoption in Md

He refused to consent prior to us filing now that we have filed we are currently on day 18 of our 30 day wait for his objection he waited until the very last day the first time so I'm assuming he will do it again! My ex likes to have control over things and be difficult he had every opportunity to attempt to reach out after being served but didn't he truly doesn't care ! My husband is the only father my son knows and loves so everyone has been living pretty normal except myself I am terrified he will contest and we will have to fight but no contact for almost 6 yrs and being behind $6100 for my son and $16,000 for another child he shows he can't provide for the children be brings into the world ! My nerves are shot over this!