Say hello to my little friend, his name is "Nicotine High".
Lots of folks realize this right about pull number two, the oh my lord what a buzz, then the thought kicks in "I can't hit this again for a while"
Either reduce your vaping by a lot, or cut the nicotine level a lot. Both measures work. Most go for the latter option, which makes juice companies happy because you vape more liquid.
Maurice