Conversational Modifier Pages

I am building a menu for a multi-chain sandwich shop in Chicago, and one of the issues the customer has is the modifier page layouts. With the current conversational modifier options, you can either have all mod groups on one page or have them broken out into a page per modifier group. 

With this format, and knowing they will be using a smaller screen, there are too many options on the page and the user would have to scroll down to see all options available for menu items such as this that have many choices.

With this format, there are too many areas that need to be clicked into with the division of pages. Ideally, the customer wants the size. hot/cold choice, and bread choice on one page while the cheese options, toppings, and extras appear on the second page.

Could we please have more control over the modifier screen control?