We just went to LO's 4 month well check and she dropped from the 15th percentile of weight down to the 5th. Our pedi isn't *too* concerned (based on mine and DH's body types, its expected that LO is going to be on the skinnier side) but she did say that I should try to get an extra nursing session in and to start solids as soon as LO looks ready. Our pedi suggested avocado because its pretty high calorie.

If you have a petite baby, when did you start solids and what were your first foods?