Repeated waking like this may start off as a result of moving home or following an illness. You mention that there has been no change in your home. Often children realise that they will get attention every time that they wake and this starts to become a regular habit. It is most unlikely that your son really needs all these extra bottles at night, so it is much more likely that he is enjoying all the extra attention he gets every night. The only way to stop your son's frequent waking is to use the 'Controlled Crying' method. This is hard on the nerves but if you do it correctly and follow the instructions absolutely correctly your son will start sleeping through after about 3 nights of you using this method. Read up about the Controlled Crying method on Google.
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