Re: New beek seeking some guidance
Welcome to Beesource!
When the bees have drawn and filled 70-80% of the lower box is generally recognized as a good time to add an additional box.
As this is a new hive, if you plan to winter in one box, then now would be a good time to stop feeding and add a honey super. If you plan to winter in two boxes, opinions as to whether now is the time to stop feeding will vary.
Personally, I'd stop feeding that hive, but re-evaluate the situation closer to fall. Also, if you continue to feed a weaker hive without also feeding a nearby strong hive, be alert for possible robbing of the weaker hive.
-- Victor Hugo -- "Common sense is in spite of, not the result of, education.”