Take heart. Chapter XLV is a step up in difficulty even from that, and the rape of Lucretia episode is IIRC where the book transitions to unadapted Latin. After that, you've more or less reached the peak of the book's difficulty. Some parts are more difficult than others, but the difference in difficulty is no longer due to graded writing. If the book is really excruciating, then that might be a signal to take a break and spend some time with something easier or something of special interest to…