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db.collection.update({"_id":"61e7e78372d3221d2c5fb242"},[{$set:{todos:{$map:{input:{$range:[0,{$size:"$todos"}]},as:"i",in:{$let:{vars:{"item":{$arrayElemAt:["$todos","$$i"]}},in:{$cond:{if:{$in:["$$i",[0,2]]},then:{"name":"$$item.name","desc":"$$item.desc","active":false,"owner":"$$item.owner"},else:"$$item"}}}}}}}}],{"multi":true})