Once you get used to this workout you can start doing it twice a day - twice a week and... If you are going to this workout twice a day (you'll get faster & better results that way) - Do it once in the morning and once in the evening and...
Realize this exercise will not make your actual breast bigger... They
will only make them look bigger by firming up the muscles around your breast
and...

You need to look at The Flat to Fem Breast Enlargement Program if you want to actually increase the size of your breast without expensive augmentation surgery.
pups,
I don't know of any diet tricks to increase breast size (i only know exercises that'll make your breast look bigger) but...
Read The Flat to Fem Breast Enlargement Program by Lucille Sorella - it has tips & tricks on how to increase volume of breast