That is a good question you posed. The answer depends upon your own perception after doing your homework.
My personal opinion is that now is the time to load up, particularly yesterday, as the share price dipped. I am now loaded to the gills. But then my own judgment might differ from yours. Please buy when you are comfortable doing so, but not before. As a last note, I notice share prices usually go up before the split, particularly if coupled with an earnings announment on the same week.