T.L.
I would think this is normal. It would not worry about it. When did he start to walk? Mine started to walk at 12 and half months and wobbled for several months. I would even say close to 2 yrs, although it gets much better but they tend to trip easily. It takes a while for them to get balanced. Does he still stick out his belly and kind of hold out his arms and sort of walk on his toes (or curls his toes)? This is normal. The more he walks to less he will do this. It would be a good idea to get some good shoes to help support his feet and help his balance. I didn't go to one of those specialty stores, we got him Nikes at 1 yr and they did help after he got used to them.
Mine is now 2 1/2 and he still can't run all that great. I told my husband that I don't think he is going to be the track or quaterback type, we'll just have to show him how to golf instead. Now he's our little Tiger Woods.
Hope that helps,
TLee