Coming to High Winder Holiday Cottages with kids, or simply looking for some easier walks, two of the best resources I have found are https://thehikinghousehold.com/ and https://www.lakedistrictkids.com/ They can be found on their instagram feeds @thehikinghousehold and @thelittlesandthelakes respectively.
Well worth a follow to see their walks and get yourself some ideas.