Kate Middleton has offered a remarkable update amid her battle with cancer.

The Princess of Wales took to her social media channels on Friday and shared that her cancer treatment is ongoing and that she will be undergoing treatment “for a few more months.” That being said, the mother of three also announced that she’ll be attending Saturday’s Trooping the Colour in London to celebrate King Charles’ birthday. It’ll mark her first public appearance since announcing her cancer diagnosis on March 22.

“I have been blown away by all the kind messages of support and encouragement over the last couple of months. It really has made the world of difference to William and me and has helped us both through some of the harder times,” Kate wrote in a lengthy caption accompanied by a new portrait of the princess dressed in jeans and a beige blazer while posing in front of a tree. “I am making good progress, but as anyone going through chemotherapy will know, there are good days and bad days. 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.”

She added, “My treatment is ongoing and will be for a few more months. On the days I feel well enough, it is a joy to engage with school life, spend personal time on the things that give me energy and positivity, as well as starting to do a little work from home. I’m looking forward to attending The King’s Birthday Parade this weekend with my family and hope to join a few public engagements over the summer, but equally knowing I am not out of the woods yet.”