Just to add to that, our older daughter, who came at two and a half.... In order to attach she needed an adult to be there to attach with. So attachment.... Very much my focus was on what she needed to do, what we needed to do together, because she had all these developmental things to catch up with. She had serious night terrors, and they started about six weeks after she arrived. For ten months she never slept through the night. She would wake up screaming every single night. So there's no way I could have been working at a job at that point.
Also, when I look at all the enrichment she needed, that was my full-time job.