How often do you have your child's photo taken, still?
The first year we did every three months with family photos every 6 (i.e. the 3 month was just Ds, the 6 month some of all of us and some of just him...)
The second year we did every 6 months.
This year...so far just once for his 3 year photos. I was thinking of doing the 3 1/2 but in looking at the 3 year, he doesn't look all that different.