how to split require.js project into multiple small bundles?

Question

Currently we are bundling our backbone application into a single script.js file, using r.js (require.js optimizer)

Below is the build configuration file we are using for it

({
    baseUrl: './',
    mainConfigFile: 'require-config.js',
    name: 'require-config',
    out: 'scripts.js',
    optimize: "uglify2",
    optimizeCss: "standard",
    removeCombined: true,
    preserveLicenseComments: false,
    include: "lib/require.min"
})

This makes script.js of 11.5 MB, which causes 45 - 60 seconds on the client side to download. So we need to create multiple small bundles for the application

Solutions I had tried to achieve this: Adding modules section in build configuration Adding modules section in require-config file Adding bundles section in require-config file

None of these solution gave the desired output, of breaking the application into multiple modules

Is there any better way to bundle javascript applications (which uses require.js) into multiple small modules