Depending upon the diet yes that would play a huge part in nausea.
Also dosage- agree with other posts, pull back the dose.
Trizepatide is better tolerated.
At your weight and depending upon your insurance I would see a doctor to see if you can qualify for a script of Zepbound which is pharmaceutical grade Trizepatide by Eli Lilly.
If insurance doesn't cover depending upon your budget- look at the cost of Tirzepatide in peptide form you have to reconstitute
or Hims which has actual Zepbond with the Kwikpens for easy injecting. Plus you know what your purchasing.