Dont worry. It's completly normal.
Maples change colors throughout summer and not just in spring and autumn. That's why it's my favorite tree. Because the colors are constantly changing.
I hope it’s normal. I’ve attached pictures showing the slightly pink leaves for reference.
I’m watering the tree once a day since it’s around 25 to 30 degrees celsius during the day. It’s also in direct sunlight until the afternoon where it’s shaded by a large tree.
The soil is usually still slightly moist when I water it. I was thinking to let it dry out a bit more; maybe watering once every two days.