As the mother of a 4 1/2 month old, there are not many baby products that I can say have been "must haves" for me so far. But this definitely is!! Especially for those first few weeks, when you need to track diaper changes and feedings closely each day and are running on little to no sleep. Even now that my son is on a pretty set schedule, this timer is helpful. When he starts to fuss, I can glance at the timer and see if he is actually hungry or if he's just being fussy and needs some extra TLC.This was particularly helpful to me since my son had trouble gaining weight at first and needed to be fed at least every two hours, per the doctor's orders. It was so hard to remember when his feedings started and how long it had been since the last one and which side he should be fed on next time. This product made everything so easy - just click a button, no math required!