Re: Short or Full
2 rak’at sunnat at Fajar is a sunnat e mo’aqqida [highly recommended] so this must not be omitted. it’s just like witr.
btw, most Muslims offer a minimum of:
2 sunnat + 2 fard at Fajar [4 rak’ats]
4 sunat + 4 fard + 2 sunnat at Zohr [10 rak’ats]
4 fard at Asr [4 rak’ats]
3 fard + 2 sunnat ayt MaGhrib [5 rak;ats]
4 fard + 2 sunnat + 3 witr [9 rak’ats]