Good Morning C., Happy 1st Birthday little man.
C. he will let you know when he is ready to give up his bottle. Until then don't force it hon or worry about it.
There isn't a Carved in stone rule anywhere that says a child has to be weaned from a bottle at age 1. Unless it is in a Dr.'s medical book on a shelf somewhere...lol
Our eldest had his until he was 19 months, then he gave it up himself. Our youngest was almost 2 when he gave his up.
I think they did pretty well . 34 & 32 now and well adjusted...lol
Our youngest gr. son is 17 months and still takes a bottle at nap time and bed time. Will use a sippy sometimes during the day, but he has to be in the mood for it. Only takes water or juice in a sippy.
If you want to switch him to whole milk and not formula you have to do it gradually. Nothing wrong with formula either except for the cost. You can use a little milk in his water for the formula and over time decrease the water and formula. It's hard for little ones sometimes to just switch over cold turkey. Tummy aches can occur if you do that.
Keep warming his bottle. Corbin will be 4 next month and still like warm milk in his cup first thing in the morning. As does Zane in his frist bottle in the morning.
God Bless you C. and just take it slow hon.
K. Nana of 5