Introduce first baby to the dogs

Anne • I'm 42 and newly pregnant with our third, unexpected. Will be 43 at his or her birth. We tried three years for baby number two almost two years old now, and one year for baby number one. So this is going to be an amazing adventure that we feel blessed to
I know that it depends on the specific individual dog... but my 3 are treated like my babies (i totally smother them and need to stop.lol); and I know they are okay with people/kids. But, I'm concerned that they might be jealous? Anyone else have experience of how to introduce your baby to your furbabies? I'm only in my 5/6th week, so I have a while; and one of my pups keeps sniffing my belly and girls, so I think so knows (and we rescued her when she was a momma herself, so she knows and is so loving). But, anything I can do now, like introduce baby cries from my phone? Or has everyone not even had any problems with this?