Gardening, Diamond Frost, finally got a bud

This is Diamond Frost, which I'm growing in a planter. Due to the extreme heat, it almost died once even though it was placed in the shade on the balcony during the summer. After cutting off the dead parts and adding more shade, new branches and leaves started to grow. The weather has been bad for the past few days, but finally, a flower bud (a small one) has appeared. I've placed it on top of the air conditioner for the photo, but it's usually somewhere else.