I've noticed when I have ordered fresh made juices (usually a 4 day delivery) they are vapeable, but all the flavors come into play a week or so later. (some take longer).
I read where a hot water bath, such as the crock pot method, or the jewlery cleaner ultrasonic method, or the hot water in coffee cup method, or even the 8 second microwave (no longer!) method can aid steep. (I've read where the microwave method is dangerous, and can cause product to "explode") I tried it with one bottle (uncapped) and was amazed at how hot 8 seconds made the e juice. The bottle even seemed to gain heat after removal from the microwave, and I was concerned the glass would break in my hand, even though I had a towel wrapped around it.
The best steep is probably to let it sit in a dark cabinet for 2 weeks. I'm practically inexperienced in DIY, but I've spent a lot of time reading about it.
I wish you luck in your journey.