Nursing for 30 minutes to an hour?!

Bre • Had our first baby in January 💖

My baby is 2 1/2 weeks old and is eating for 30 minutes to and hour now. Half of that time she is just sucking and sleeping but if I unlatch her she gets fussy and acts hungry so I usually just let her nurse for as long as she wants to. I also use a nipple shield. Is this normal? Has anyone been through this? FTM so everything worries me.