So I only tried with etoh which probably still is quite the same in terms of solubility. But man this is way too much that you used :surprised just cover your goo with a little more etoh (so iproh should be same) and heat it to boil while stirring. It should be just that much, that you can still decant something. So if you use too little, the liquid with all the other stuff is hard to be decanted. So just use as much that you are sure you will be able to decant stuff, even when crystals will be forming and growing within that liquid, which would make it hard decanting if liquid is too less. But therefore this was over the top

Now after crystals stop growing maybe still transfer it to another glas and keep on evaporating it, but of course not to 0%, leave a little that you can still decant to get rid of any potential water or CA so maybe you will get some more stuff.