Hi @GrandmaSue
We warmly welcome you to the Friendly King Community's Candy Crush Saga forum.🙂
You can of course collect sugar drops from previous levels. Not every level has the benefit of collecting Sugar Drop, which means you will only get Sugar Drop from Sugar Levels and Sugar levels will have a C mark.
On the other hand, after collecting 180 drops, you will not get the benefit of collecting Sugar Drop for the next 8 hours.
If you have trouble understanding anything or have any other questions, let me know again.😉
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