Switching from formula to milk

My son will be one in 3 weeks and once his last cans of formula are gone will be switching to milk. I'm curious if mom's just completely switch them to milk when their formula is gone, or if you gradually mix milk with the formula till it's down to all milk? With my daughter I just switched her right from formula to milk when her formula ran out. If you did do it as a gradual process, how long do you keep up the process before you completely switched to milk? Also what type of milk do you switch to from formula? Whole milk? Of course will be going to the dr soon and I'll be speaking with her at that time, I'm just curious as to what other mommies did. He already uses sippy cups and he has always refused to drink his bottles warm so I'm hoping that he'll just switch like my daughter did lol.

About Jenelle
Current: Buffalo, New York
Birth: January 11
On Moms.com since: Jan 10, 2014
Hi, I'm Jenelle and I'm 32 years old. I got married at 19 and had my daughter, Kiera, when I was 21. Though still legally married her father and I have been separated for about 5 years now. I am expecting a baby boy in august. We are excited.