There's no reason to worry about your baby's weight. At all. Whether it's proportional to your baby's height nor not. My daughter was in the 90th or 95th percentile (or above) for weight and was in the 50th for height until she started walking. In her first year she saw three different pediatricians (we moved and then switched docs). Only one commented on her weight but even then he said not to worry much because she would most likely even out once she started walking. And when she did start walking her percentiles flip-flopped. At her one year appointment she was in the 90th percentile for height and only the 50th for weight.My son is a monster and was always off the charts for both weight and height. At 16 months his head is still off the chart. He currently weight only 3 pounds less than my almost 3 year old daughter. He has always been heavy but it's been proportional with his height.As babies get older they put on more fat stores to prepare for the transitions they make as they develop new physical skills. It takes time for babies' appetites to catch up with increased activity so they use those fat stores for a while. Most babies have increases in weight around three months, when they usually start rolling over, around 6 months when they usually start crawling and around 12 months when they usually start walking. The bottom line is that weight is just a number, no matter who you're talking about. Some babies are chubby, others are skinny. All of them are wonderful and perfect and for the most part, can't be changed. If your pediatrician isn't concerned, you shouldn't be either. And even if your pediatrician is concerned he or she won't put your baby on a diet because that isn't healthy for growing babies. Chances are good your baby will lose the baby fat eventually. For now, just enjoy your squishy little sweetheart while he still lets you cuddle him. Because chances are he'll be too busy for hugs before you know it!