get along on

get along on (something)

To persevere or survive utilizing something in particular. You can't get along only on stuff like chicken nuggets and cookies—when was the last time you had a vegetable? How are we going to get along on just one income?
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get along on something

Fig. to manage to survive with just something. I think we can get along on what I earn. I can't get along on what they pay me.
See also: get, on