Muwāfaqah describes corresponding meanings across forms in a particular use. Ibtidāʾ highlights a distinct lexical meaning of Form II.
PairObservationProperty
تَمَرْتُهُ / تَمَّرْتُهُDifferent forms, related sensesCorrespondence
كَلَمَ / كَلَّمْتُهُWounding versus speakingIndependent meaning
جَرِبَ / جَرَّبَItching versus testingIndependent meaning
Therefore a doubled middle radical should not automatically be translated as “doing more of the same thing.”