While a part of 'Harry Potter and the Deathly Hallows' is definitely slow-paced and lacks action like the rest of the book, it is by no means boring as a whole. While some readers might find this boring, from the perspective of the plot, this 'limbo' in the book serves as an illustration of the characters' feelings themselves, and this phase eventually leads to Ron leaving the forest and going back to his house. If a reader feels bored, it is meant to induce that exact feeling to illustrate how it must have actually felt when the trio was wandering purposelessly and in search of Horcruxes they didn't know where to find.