I was wondering if anyone could offer any insight on how to get out of this annoying loop I'm stuck in.

I'm aiming for Iris Purple, however I'm stuck between Lavender Purple and Colibri Pink. My feeding sessions look something like this:

LAVENDER PURPLE
>> Feed one / two berries OR pears
** New feathers message **
>> Result: Colibri Pink

COLIBRI PINK
>> Feed one / two fruits OR pineapples
** New feathers message **
>> Result: Lavender Purple

I've been stopping as soon as I get the new feathers message and have only been feeding single types of feed (i.e, not berries AND pears - mainly because I'm getting the new feathers message after 1 feed).

This is driving me crazy and costing me a small fortune. Can anyone help me get out of this cycle?