1:36 AM, Friday July 30th 2021
If I felt like you needed to work on more to develop a better understanding I would assign more, as mentioned I mostly just want to make sure you're not relying on one rate of foreshortening as a crutch.
If the 15 that I assigned are rough and demonstrate you need to work on them then I may assign more if I feel you need more time with them.
Until that happens however I feel 15 is fine. Once you have been given the go ahead to carry on with the course you'll be doing them along with previous exercises as warm ups and continuing to improve.
The point isn't to grind until perfection just display proper understanding of concepts.
You're doing fine so far, so don't stress about it too much.