Dd broke in her DMs (traditional style) by wearing them with hiking socks every day, building up gradually from 15mins on the first day. I think it took her 2-3weeks to get to wearing them for several hours. She did similar for walking in them, ie she didn't spend long periods on her feet, building up gradually from a 10-15minute walk during her breaking-in period, until she could wear them all day. It took her about a month. She also used the coconut balm stuff, every day at first, gradually reducing to every week or two after the first month. She had no blisters at all.