UNUserNotification. Send local notification in period of time

Question

My task is to set a period of time when the user receives notifications. So I know this period (10.00–11.00), interval (5 min) and can calculate the number of notifications (period/interval = 12). So the app adds 12 requests to UNUserNotificationCenter. In these conditions, everything works fine. But there is a problem:

An app can have only a limited number of scheduled notifications; the system keeps the soonest-firing 64 notifications (with automatically rescheduled notifications counting as a single notification) and discards the rest. If the user sets a longer period (10 hours) the number of scheduled notifications = 120 and they are not firing.

What can I do about the 64 notifications limit?

Maybe there's another way to schedule notifications in a specified period of time?

My code:

let calendar = Calendar.current
let period = calendar.dateComponents([.minute], from: self.startTime, to: self.endTime)

var intPeriod: Int {
    var intPeriod = period.minute!
        if intPeriod < 0 {
        intPeriod = 1440 + intPeriod
    }
    return intPeriod
}
let quantity = intPeriod / minutes

var increasingMinutes = 0

for _ in 0.. < quantity + 1 {
    var increasingTrigger = calendar.date(byAdding: .minute, value: increasingMinutes, to: self.startTime)
    let dc = calendar.dateComponents([.hour, .minute], from: increasingTrigger!)
    let trigger = UNCalendarNotificationTrigger(dateMatching: dc, repeats: true)
    let request = UNNotificationRequest(identifier: UUID().uuidString, content: content, trigger: trigger)
    UNUserNotificationCenter.current().add(request) {
        (error) in
        print("Error \(String(describing: error))")
    }
    increasingMinutes += minutes
}

startTime, endTime - bindable vars from DatePicker

minutes - bindable from Stepper