Are you doing this for your own vehicle or a customer?
There is a cost/benefit ratio to look at here. The cost, being your time and product, versus the added durability. You can look deep into some chemical researching, and about 90% will tell you it's not worth the effort.
If your own car, I highly recommend waiting the suggested time....your finish isn't going to weather away in that time. If a client's car, I would suggest putting a paste carnuaba over the sealant to ensure coverage and add a bit more depth and shine.