Mike ,
Gillybee has 14 colonies, has had more, and is not a beginner. He will be able to look after it, no doubt. Either one more colony, and still collecting honey, or several more.
Stuart,
Not sure what you are meaning with 'only hive bees' (comma missing, or what?). They have been flying almost since you got them? Not as often as you might think is the answer to your question. Regular checks for progress on expansion (have they got enough space), weekly checks coming up for swarm control, depending on size, space etc, vigilance for disease and regular varroa checks (mite drop).
No syrup if they have sufficient resources (may well collect a honey crop shortly)
....... Have you been on a beekeeping course, yet?
Regards, RAB