Both of those were part of the impulse.
For waiting, an hour seems to be enough time to overcome any built tolerance. I believe Strassman's studies involved a high 4 dose in a row session - being 4 high dose injections separated by an hour of time. I don't recall if it was every hour, or an hour after the effects had diminished.
*EDIT TO ADD*
As far as how long should you wait is another question. I'm rather new to the spice, so have essentially nothing to offer there. If you're smoking daily, it might be good to have some people who you trust deeply give you feedback if they think you start having difficulty integrating your experiences in a healthy way.
I get what I jokingly refer to as "elf flashbacks", which are reminiscent of the standard "flashbacks" for me. I sometimes think these are my brain integrating the experiences, there's a lot of reflection on my part during them. And practicing paying full attention to work or whatever else I'm doing while that dimension feels somewhat open.
But this is old habit from practice with the non-spice entheogens for me. I consider whether the spice's offering is simply too far away from "normal" reality for me to be able to have any success at a translation into action or "mundane reality".
I am a writer, currently using these forums to build a character for a novel who becomes obsessed with strange things and has a psychotic break. I neither condone nor engage in illegal activities.