I think you need to focus on finding a way for to take milk first, rather than just stopping. Going cold turkey is a bad idea for you health wise, and stopping when he has no other income of food is frankly dangerous.
This myth of 'a baby with take a bottle if they're really hungry' is just a myth.
I gave up feeding my 11mth old, cold turkey, I expressed over a week and that was that... DS, however, still refused any milk (formula, cows or expressed), bottle or cup for a number of months. However, as he was a little older than your DC, the milk intake, or lack of, wasn't an issue, as he was eating cheese and yoghurt and I was giving him a supplement with Calcium in it. DS loves milk now. Perhaps try expressed milk in a cup?
Has anyone ever given up BFing their child by going cold turkey? DS is currently 5 months, EBF and refuses the bottle despite several attempts. However, I would like to give up BFing at 6 months and see no way of going about it other than cold turkey. Has anyone successfully done this with a baby that has been EBF and previously refused bottles?