Letting kids be kids is the best thing to do.. We had shot Abhiraam's first year birthday function and his mom later requested if we could come home and click some more pictures of him..
Was more than thrilled to do so because Abhi was a shy kid and it was quite challenging to get him to smile.. Just let him be and let him enjoy all the distractions and wait for the right moment to capture him..
Worked out pretty well!!
Used my trusted Nikon D5 along with 70-200mm.. Used ambient light along with a small soft box mounted with a Godox AD200..