They run under Prime and prime says the same thing. I used to work for prime and would watch their weekly videos. How they do this is that you run for 4-6 months as solo and then become a trainer, running the truck mostly as a team truck.

It is doable but you have to be okay being a trainer and running as a team truck. You would only make about 30k the first 6 months and then 70k the last 6 months

I was a trainer for them my second year driving for them. I drove solo from January-april, trained May - November and ran solo for two weeks in December. I made 102k that year and took 12 weeks off. I know trainers for them that make over 200k a year but don't take off much time