First workers help

[Nelridea]

Hello,
I've seen the first 3 workers in my tube (from this queen https://forum.AntsCanada.com/viewtopic.php?f=48&t=15257&p=61588#p61588).
I'm new to ant keeping and I wanted to know if I should start feeding and what and how often ?
also since it's a local species (and from what I've seen on lasius niger care sheets) I assume they need to hibernate I just don't really know when should I move them for that and when should I stop it ? And is it safe with only 3 workers if no other hatch before hibernation ?

[Vincex]

Put a small drop of sugar water or honey into the test tube and they will work away on that just don't put too much or they LL drown ! If you can catch a little spider or another soft insect and put that in there they LL be fine just maybe freeze it for a few hours and cut the skin to make it easy for them