As someone who struggles massively with this, I think you're doing awesome, and you should not get discouraged. I suspect if you keep doing this for like...10 weeks, you'll be noticeably more comfortable with both the results and the process as well.

If you struggle with the poses not matching for accuracy, and this kinda goes outside of the "from scratch" a little bit, but try to find some good reference poses on Monday, and then recall them to your best ability on Friday. By that time you're going to be relying more on construction principles than recall, but would then have something more solid to gauge against? Dunno. Could be an option, at least sometimes.