@ChadSims2
I was actually thinking of replacing the stroller with a baby carrier that a teen or older would equip when leaving with the baby. The there won’t be a routing problem like there was in the Sims 3 caused by the terrain.
They could also make them work like the pets do and they can add in coding that keeps them in the house unless you take them outside and even then the game shouldn’t let you stray to far from your baby if you set it on the ground. They could also have play mats where the baby plays with rattles and small stuffed toys and teething rings. Babies are a lot like pets in the aspect that they can’t express what they need in words. So it would be up to use to check their needs like the way you check a toddler except the baby can’t talk so as your parenting skills go up so does the amount of time before an something like a diaper change, feeding time, or attention needs will be low enough to cause your baby to cry so you can prepare for it. Like Baby “A” will be getting hungry soon.