I had a birdhouse hive occupied since last April. In a paln to upgrade , I removed the back end of the birdhouse (opposite to the entrance) and insert it into a Langstroth hive. A space for three frames left at the back. When I carried the birdhouse I found it very heavy and when I opened it I found the combs saturated with honey. Is it time to remove honey and thus the birdhouse and install the rest of the frames?

The birdhouse is 10"*10"*12" H. The new hive is 10 frames Langstroth hive.

Is there a risk of a swarm to occur even after the expansion?

If anyone got an idea please advise.