He can go through tthe Family Court to have a parenting agreement put in place giving him regular contact with his child.

If bub was born on the 18th though.. that's only a week ago. Mum is probably still feeling all over the place emotionally. Personally I would give it a bit more time yet, I know it is hard for him but maybe another couple of weeks will see things change.

Also, remember you never know what has gone on between them as a couple. Sometimes relationships & people are very different depending on where you are standing

Ok so here's my opinion - If I were him I would keep trying, call etc but nothing else just yet. If it continues then in a couple of weeks he could let her know then that he fully intends to be part of his child's life, even if that means going through the court. It will be nicer if they can work it out between them. Maybe he just needs to let her know how serious he is about seeing bub.

HTH