I didn’t tend to “hoard” much at all at that level. Most hoarding was just saving things like DNA and DBs to use only when there was a discount available.
With food I generally just tried to plan for which dinos were most important for me to level up at the time. If I know I have some legendaries hatching soon for instance, I might hold off on leveling up other dinos and save my food for the much more expensive legendaries.
If you care about completing missions, find the thread listing those so you can plan ahead and “hoard” resources specific for what’s coming up, like not feeding dinos until you reach the next mission where that’s one of the tasks, or missions where you need to have certain amounts of food on hand.