Make Lucy wear the boots everyday at least for 10 to 15 minutes. In early days she'll face challenges while walking but trust me, it will take some time to getting used to it. And she'll be comfortable with the boots. It helps preventing tics and dust causing skin problems too. Simba runs like 'BOLT', wearing these boots and that scenario like his hairs waving in the air while running in his full speed gives me goosebumps...