Harry felt as though he had barely lain down to steep in Ron's room when he was being shaken awake by Mrs. Weasley.
“Time to go, Harry, dear,” she whispered, moving away to wake Ron.
Harry felt around for his glasses, put them on, and sat up. It was still dark outside. Ron muttered indistinctly as his mother roused him. At the foot of Harry's mattress he saw two large, disheveled shapes emerging from tangles of blankets.
“'S time already?” said Fred groggily.
They dressed in silence, too sleepy to talk, then, yawning and stretching, the four of them headed downstairs into the kitchen.
I don't know what "two large, disheveled shapes" refer to. Are they persons, Fred and Ron maybe? It's really miserable.