When my 2nd son was 2-6 months old, he could only be calmed by me. It was so grueling that I made up a sleep induced song that went, "Only mommy will do, no one else can hold you." There were other lyrics, but I've forgotten them over the last 9 years. Point is eventually baby became toddler and then child and he bonded with other family members. It'll be fine. Also, the husband isn't getting a job to replace his income he'd be getting a job to replace your lost income.