There is premium support that Ansca offers for this; http://www.anscamobile.com/corona/support/
Beyond that, I would suggest removing pages once viewed and loading them when needed.
Have you considered using Director?
If this is a project you’re working on for a client or has you really stressed out you can send me an email and I can try to advise you. Email is peachpellen [at] gmail.
Peach 
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