It's never easy when it's single income. Job satisfaction is very important and if he does not like his job, he will feel that it is a drag going to work daily. Maybe he can consider dropping recruitment agencies his CV and see if there are any suitable positions available for him.
As for yourself, if you have spare time, I do know of other SAHM whom participates in surveys to earn additional money. It's not much, but I guess every dollar counts.
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