Exceeding the Weight Limit

Look at those cute little cheeks and those cute little feet sticking out and then think.....he's a little chunk. He has exceeded the weight limit of his car seat. He weighed in at 23 lbs and 5 ozs last week at the doctor. I have been looking for a car seat ever since. Yesterday my Mom and I bought matching car seats for our vehicles...now we just need somebody to show us how to install them. The instructions aren't very helpful. I guess this weekend we'll figure it out.