The Last Jedi didn’t hit single digit millions until its 19th day of release (539mil total at that point)
The Rise of Skywalker got there on its 14th day. (417mil total at that point)
People are too focussed on the number of days. All the films have shown a large drop off following the holiday period starting from Jan 3-4, and I don’t see why TROS will be the exception. Since Christmas it has been closely following the trajectory of RO, and TLJ, except at a lower level. There is no indication in the data, that the curve for TROS will cross the RO curve. If it doesn’t cross the RO curve, it will stay below it, meaning it will make less than 1.05 billion.