I shake them, remove the caps and spouts, and set them on the counter overnight.
In the morning, I replace the spouts and caps, shake them, and send them to the back of the line for a couple of weeks.
This doesn't mean I won't sneak a drip or tank full during that time. If I find it tastes good, no more steeping required. Personally, I won't do hot water baths, or any other measure to rush the process, and I don't know of any vendor who will suggest it.