Will the 1 month break means there will be another long timeskip like the post-Marineford one?
Hardly.
Time Skip happened because Luffy came from 2 losses. Sabaody and Marineford. On those, he and the crew were heavily outmatched.
No such thing here. They literally took down 2 Yonkos.
It's really because Oda spent too much time in Wano. Not even himself could believe how long this arc took.
He really, REALLY needs to revise what he had planned otherwise he won't be able to finish the story.
So he probably will just cut some stuff. He needs to plan what to cut and how to do it, etc.