What do you think is significant about the record date of the split? I wouldn't expect such an insignificant date to have any expectations in terms of movement of the share price. Even the actual day of the split itself could go either direction - it largely depends upon how much of the recent buying was market makers "cleaning up" their books and whether they are ahead of the game or behind it when it comes time to distribute the split shares. The rest of it depends upon the same supply and demand that normally controls the share price movements.
And, guess what? We have no real way to know until the shares make a move or they don't. So, I suggest you may benefit if you tame the manic-depressive mood that changes positions faster than a day trader on crystal meth. Unless you are a day-trader or swing-trader, an investment in Tesla is based on the value they create as they grow production, production capacity and gain efficiencies in their supply chain, their manufacturing and sales and distribution over time. Essentially, grow earnings. And they are showing us how they can do that at an astounding pace.
This increase in value is what is behind the fact that many TSLA investors have 100X'ed their investments in only a decade and change and I think it's likely those gains are going to continue to compound
over the next decade.
On the other hand, your perpetual handwringing is focused on the normal volatility or noise which is basically nothing more than white noise.