didnt forfill the wuqoof of musdallifah

ASalaam wa alaykum mufti saab im on haj, my wife is expecting and was fatigued by the journey to arafaath, we both follow imam abu hanifa ,We left early from musdallifah at the time of thuhajud towards mina,to avoid the heat and to move slowly given my wife condition, we made fajr in mina and then stoned big shaytaan, someone advised that i didnt forfill the wuqoof of musdallifah i.e to perform fajr in musdalifah and i should give dum,please advise if dum is due and if so the value for each person?
Shukran