Britain’s Kate, the Princess of Wales, says she’s making “good progress” in her ongoing cancer treatment and announced she’ll take part in an annual parade this weekend to make her first public appearance of the year. “I am making good progress, but as anyone going through chemotherapy will know, there are good days and bad days,” Kate said in a statement on Friday. “On those bad days you feel weak, tired and you have to give in to your body resting. But on the good days, when you feel stronger, you want to make the most of feeling well.” Kate added: “My treatment is ongoing and will be for a …