The past tense of Overdo is overdid.
verb. ['ˈoʊvɝˈduː'] do something to an excessive degree.
1. Preposition or subordinating conjunction Occasional treats of leftover vegetable cuttings and table scraps are okay, but don’t overdo it. 2. Noun, singular or mass Don’t overdo it, however. 3. Verb, base form Just be careful not to overdo it.