I haven’t heard of the “2 year” rule that you refer to but new companies may have a more difficult time proving that they can support the new green card seeker. This USCIStitled – “How Do I Sponsor an Employee for U.S. Permanent Resident Status” may be helpful!
We help businesses with visas / green cards all the time at. Our marketplace has immigration attorneys that offer flat-fee pricing and price quotes for the green card process!