Dear Pat, I too feel that there is enough similarity in babies I have seen to say that growth spurts do occur at fairly regular intervales. I would think that the same is true of premies, so I will be looking to see if any experts in that area have anything to say. IMHO Martha A. Rhea, IBCLC *********************************************** The LACTNET mailing list is powered by L-Soft's renowned LISTSERV(R) list management software together with L-Soft's LSMTP(TM) mailer for lightning fast mail delivery. For more information, go to: http://www.lsoft.com/LISTSERV-powered.html