Using DispatchGroup in onAppear - swiftui

Question

What I am trying to achieve is:
1) fetch records from cloudkit (excluding assets)
2) randomly select 3 recordIDs from those fetched records
3) fetch the full 3 records from cloudkit (including assets).
The issue that I'm struggling with is making sure that 1, 2, & 3 begin and are completed one after the other.
//...
.onAppear(){
let group = DispatchGroup()
// MARK: - 1) fetch from CloudKit - excluding CKAsset
CloudKit.fetch() {(result) in
group.enter() // moving group.enter() above CloudKit.fetch() locks everything up
switch result {
case .success(let newItem):
self.array.append(newItem)
group.leave()
case .failure(let err):
print(err.localizedDescription)
}
}
// MARK: - 2) randomly select 3 records
group.wait() // doesn't actually wait as this is executed before group.enter()
self.array.shuffle()
let firstSelection = self.array[0].recordID!
let firstSelection = self.array[1].recordID!
let firstSelection = self.array[2].recordID!
// MARK: - 3) fetch recordID from CloudKit - includes CKAsset
CloudKit.fetchRecord(recordID: self.array[0]) {(result) in
switch result {
case .success(let newItem):
self.arrayRandomlySelected.append(newItem)
case .failure(let err):
print(err.localizedDescription)
}
}
// run for remaining 2 records and move to next view when done
}
I tried using DispatchGroup() but group.wait() gets called before group.enter(). Am I using DispatchGroup() correctly or should I be trying something else?