Hi everyone, long time lurker, first time poster here. Last Saturday, I added a queen excluder and a medium super to my hive. I also made basically a migratory cover with an upper entrance for them to use, however I've yet to see a single bee using the top entrance, and last night I pulled the cover just to have a look, and there was only a single bee that had come up through the excluder. Is there anything I can/should do to lure them up into the super and to use the upper entrance, or do I need to be more patient and let them eventually work their way up. Thanks in advance!