how long after molting do they "restart" laying?

I have a crew of 7. I never get more than 5 eggs a day- but I am ok with that. I am new to chickens and am having as much fun watching them as I do having the eggs. However, Since they molted about 3 weeks ago- the 2 leghorns are the just about the only ones laying. I got 6 of the 7 from someone early spring and he told me they were last summers babies so only supposed to be a year old. There were eggs the very next day after I brought them home and it was not a stress free move so I was pretty convinced they were good layers. Besides the two leghorns I have two buff orps, one cochin, a wyndotte and a mutt. used to get two decent sized light brownish eggs and a small darker one- now I have been getting the two whites and one of the bigger brown ones. No small one at all and only the one bigger one. The mutt and the wyndotte and the only ones who still look "in molt". Everyone else has refurbished themselves. I know we are going into the winter and they slow down some- do they stop completely? If not- when do I start to worry about the fact that no one seems to be laying? Its been a good 5 days at least if not a week that I am only getting the leghorn +1 egg. Everyone eats when I feed and they all come running for oats or mealworms. Also all interested in getting out when I open the door to range them so other than the no eggs- all seems well.