Bits and pieces, every now and then! I take it day by day, usually. Most days, it doesn't take me too long in the morning to get a sense of things, but I still have them every now and then when I wake up with absolutely nothing, not even my name. I've seen a few here, but someone here was able to look into my head a bit and was pretty sure that any attempts to fix it that were medical or magical would run a high risk of destroying what's left. I don't want to take that risk.
Mostly, I just keep notebooks on everything. I've filled so many since arriving, especially with all of the multiples.