... i have a few hives that have no brood but a queen and low population. Should i feed a little bit of fumagilin syrup to see if i can get them laying???
I have a few of those but i don't see how Fumagilin is supposed to help. Just feed them regular 1:1 syrup. I don't know much about your weather but i guess your winters are colder than ours. Would they normally be laying by now? They may not be laying if the cluster is too small. (she could be laying but losing all of it to chill!) Make sure they are right spaced for their size.
You can also give them some pollen patties and a 25 watt heat lamp under the bottom board if you want.