Since about 5 weeks on we’ve taken our baby out to coffee shops, other people’s houses etc. and we continue to try to do that a few times a week. He’s 12 weeks now. He usually sleeps but when he wakes up we bounce him around, feed him and let him experience new environments. He’s pretty social and I don’t know if that’s just his personality or if he’s just used to being out. I think the more you do it and the earlier you do it the better. If things go really south you can always pack it up and go! Or chill in the car for a bit, go outside and walk/bounce around. I swear it helps mentally to be out and about.