Bottle weaning??

#letschat #lemon8contest My son is 17 months old and still takes a bottle at nap time and at night to go to sleep. I have unsuccessfully tried taking his bottle twice now and he has absolutely thrown a fit and cried for hours until I gave it back. He wouldn’t let me switch it out for a sippy either! I need some advice on how to get this bottle out of the picture!!! Thanks!!