My Son At 3 Months Over The Last 3 Months My 15 Month Son Has Been Waking At Least Twice A Night For A Bottle.How Can I Stopthis?

Over the last 3 months my 15 month son has been waking at least twice a night for a bottle.How can I stopthis? - my son at 3 months

He began to sleep overnight at the age of 2 months with no problems until 3 months ago. I tried not to give it, complaining his bottle, and further. It will take the bottle and sleep at once, but I would like my normal sleep again!