A question about a recipe: Corned Beef and Root Vegetable Hash with Poached Eggs

I have a question about step 2 on the recipe "Corned Beef and Root Vegetable Hash with Poached Eggs" from Oui, Chef. It says:

"While the beets are cooking, toss the cut potatoes, carrots and garlic cloves with some olive oil, season with salt and pepper and spread evenly on a baking sheet. Place the sheet into the oven along side the beets and cook until nicely browned, stirring occassionally, about 1/2 hour. When cooked, remove the sheet tray from the oven and reserve.

Could I do up to this point a day ahead and then do the onions, fresh herbs and eggs the next day?
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