Welcome to Lorwolf, I hope you enjoy your stay! One of the key differences between FR and LW is that LW slowly regenerates your energy- though it takes a while. There are certain Companions (familiars), like the Bone Rodill and Tawny Rodill that if you have on your wolves and bond with them, they will also provide energy! The beginning is kind of tough to get enough food to keep your wolves fed, but as Phlox mentioned, the forums are full of generous users willing to help out. Sent you a couple Tawny Rodill to help you out!
One of the threads that really helped me is the Gardeners Guild. You'll notice that for Farming, there are certain foods that Tiny and Bigs want, which I had trouble keeping, so that is a super helpful thread to keep your Compost and Water topped up! (Also, good to check your "Auto-Feed" from your Den page to make sure you're not accidentally feeding those important foods.