Yeah, it's too heavy
Best bet, look for a different camper (SUB 5000 lbs), or you have to get a better tow vehicle.
My first camper was 2900 lbs dry, and it had a very square front wind load area, not aerodynamic in the least. It towed at 55mph OK not in overdrive grear.
My new camper is 2600 lbs dry, teardrop shape, and I still have to stay out of OD, but I can easily tell how much easier it is to tow. The few hundred pounds and having a better shape makes a big difference.
It reallly doesn't matter if the trailer is heavy if you won't tow very far, but my own trips are always over 200+ miles in one way towing distance. Sometimes two days in a row to get to the camp area. Having the RIGHT trailer for your vehicle and needs is important.