I have a husband just like that, quick to bail. It's VERY hard emotionally, I know!!! Remind him of your business plan. Have you already worked every possible income avenue possible for your business in 3 months? Are you selling online as well as retail? How much advertising have you done?
I know for certain 3 months isn't enough time to know anything!!! I don't think 3 years is enough to predict success. He needs to see a much bigger picture of how business works. You don't judge profitability by one quarter!!! That's so incredibly short sited. Think about your business as an investment, you earn some years and loose other years, but over all you grow and make money.
How about the hundreds of thousands of businesses that live for black Friday? All year long they are in the red until that magical date, where they now make all their profits for the year between Thanksgiving and Christmas. Perhaps I've simplified things a little, but the concept is correct! Perhaps you should do a little research on the topic and explain it to your husband.
Food businesses are most profitable around holidays. As such you should gear your inventory and product line to capitalize on those peak times.