Following the planned route to get acceptable part of meal (2,6)
I believe the answer is:
on course
'following the planned route' is the definition.
I know nothing about this answer so I cannot judge whether this works.
'get acceptable part of meal' is the wordplay.
'get' means one lot of letters go next to another.
'acceptable' becomes 'on' (as opposed to not on, unacceptable).
'part of meal' becomes 'course' (as in the different courses of a meal).
'on'+'course' is 'ON COURSE'.
'to' is the link.
Can you help me to learn more?
(Other definitions for on course that I've seen before include "Heading the right way" , "going the right way" , "Here find students" , "when receiving instruction?" , "Proceeding as expected" .)