Sorry to get tedious, but did you recover your collection pot into vacuum pressures? Is your lid bulged up or just tight?
Your on the edge of the meta stable zone, which is great for larger slow growth. If you want smaller more numerous crystals faster you have to edge towards a more saturated solution. This is accomplished primarily in two ways. a)Removing the solvent portion of the mixture through evaporation, b)reducing the temperature of the solution.
I opt for temp manipulation usually as it preserves terps if your solvent is primarily from the cannabis vs tane, as well as the time factor, rather not have a solution sitting for weeks if my end goal is not boulders.
Depending on the variety/solution extracted if crystallization is desired my parameters can change as much as 100f or more and not going below waters freezing point. Unless im specifically going for boulders a week maybe 2 is plenty of time, if you okay with something super grainy like 710dabtek posted earlier in this thread than can usually be accomplished in less than a day or two tops.
Here are some graphs I made to help visualize.
