A suggestion from my understanding...
While two years is the rule, it is typically not with your current employer but work history in the same field. For example, if you worked for ABC as a producer for 2 years and then went to CBS and worked as a producer 1.5 years - your "total" employment history should be satisfactory.
If this is the case with you, remind your loan officer you didn't change "fields" but simply took a better paying job. Ask him or her if writing a letter of explanation to the underwriting would be helpful and provide greater clarity in the matter.
Best of luck!