I got my first two hives last year on 7th July, both 5 frame nukes. I put straight into Nationals and filled with undrawn frames. They were given about 3 pints of feed and left to get on with things.
They filled the Brood box, drawing out all the comb and bee numbers built up nicely, but I did not need to add a super. The weather was poor last summer.
The best advice I could offer (not that i know much about anything!!!) is to leave them alone as much as possible. It’s unlikely that they will want to swarm so late in the season, and after the initial feed they won’t need any till later on in the year.
Mine over wintered well after a good feed
Good luck