Sophie is just turning 16 weeks old Saturday and has lost her first 4 teeth in the last 2 days. All incisors - 3 on the top, 1 on the bottom. She’s also gnawing on stuff with her rear teeth like crazy. I am giving her ice cubes, frozen stuffed kongs, flavored teething ring treats (she loves the pumpkin ones), and I’m even freezing her plain rubber toys just to make them cold. Should I avoid giving her really hard treats like her Himalayan yak chew? any other teething toy or treat suggestions to help her?