[{_id:"65643c670b0bfd17c27d3496",habitName:"PHP",getFullYear:[{_id:"65643c670b0bfd17c27d3498",month:"January",year:2023,days:[{objId:"1f5a9609-35aa-490e-aaf3-bacee3f4345c",day:1,isComplete:false,_id:"65643c670b0bfd17c27d3498"},{objId:"12785478-6c47-4303-97b3-733fad5e8987",day:2,isComplete:false,_id:"65643c670b0bfd17c27d3499"}]}]}]

db.collection.update({_id:"65643c670b0bfd17c27d3496"},[{$set:{getFullYear:{$map:{input:"$getFullYear",in:{$cond:[{$eq:["$$this._id","65643c670b0bfd17c27d3498"]},{$mergeObjects:["$$this",{days:{$map:{input:"$$this.days",in:{$cond:[{$eq:["$$this._id","65643c670b0bfd17c27d3498"]},{$mergeObjects:["$$this",{isComplete:{$not:"$$this.isComplete"}}]},"$$this"]}}}}]},"$$this"]}}}}}])