Always push all your frames together in the middle of the box, that includes the feeder frame too.
Leave any extra space against the two hive box side walls. Spreading extra space amongst the frames evenly only encourages connecting burr comb because the bees feel it's too much space between combs... so they fill it.
If there's any comb built on the sides of the hive box, I'd scrape it off. Consider giving the brood box one frame of drone foundation, or one frame of foundationless, that the bees can build/raise drones on. It makes a convenient 'drone brood trap' that you can scrape the caps off occasionally to reduce mite population, and it satisfies the bees need to build drone comb, so they build less drone burr comb it in messy and inconvenient places. They will also use the drone frame to store honey during the winter when not raising drones on it.