Sounds normal to me. Those hens are probably getting on 3 years old and you're in RI. They won't lay much through the winter anymore. That's just normal. Eggs are as much a seasonal food as any plant unless, like plants, you take special measures to keep them producing through winter. In the spring they will start laying again, a healthy number, maybe 4-5 a week.
Young birds lay more, so if this frustrates you, soup is a legitimate option. I always like to keep a couple pullets in my flock to get some eggs over the winter for baking and about nothing else. In the summer months I eat eggs almost daily.