First, tell your DH you have this interview.
Secondly, download Skype on your computer. I would try computer first because it doesn't move around, hopefully it will be easier to have your hands free. This depends on:
- does your computer have a webcam
- does its Mike pick up your speaking OK
- can you hear someone else speaking
For these reasons you MUST find a friend who is willing to talk to you over Skype before the interview.
Third, practice using Skype
Fourth, in the interview, don't talk about how you are going crazy as a sahm. You don't want them to give you this job as a favour. You need to talk about how enthusiastic you are about their company/organisation/ this particular job.
Also think in advance of a couple of work stories from the past that show you in a good light, and when you are asked " can you give an example of a time when..." see if one of these stories fit the bill.
Listen to the questions, don't answer the question you think they asked but they didn't...
Have 1 or 2 good questions lined up for them, that show you in a good light...