One other question: are you sure it was the Moderna you had on January 20 and February 10? That's 3 weeks apart and the Moderna--as opposed to the Pfizer--is only scheduled 4 weeks apart.
I too was able to very quickly and easily obtain the Excelsior Pass for both myself and my husband. Each time I was(pleasantly)surprised that the few choices presented for dates of our vaccinations included the correct(and different)dates.