Posting this as a warning rather than a discussion, and I will edit the post if any of it turns out to be wrong.
I have been on semaglutide for nine months, currently holding 1.7mg rather than pushing to 2.4mg, and the last two dose steps bought me much less than the first two did.
That holds for the injectable. The oral formulation has different absorption behaviour and the dose numbers are not interchangeable, which is worth saying out loud because people quote them as if they were.
What to check: Worth knowing that the injection site changes very little. Abdomen, thigh and upper arm are bioequivalent for semaglutide, so a site change is not a plausible explanation for a bad week.
If your experience contradicts this, say so in the thread — I would rather be corrected here than have people act on a warning that does not hold.