TRACON controller reported a loss of separation due to an aircraft taking too long to turn inbound o...

Narrative:

This event occurred during special staffing circumstances; in which we are working on skeleton crews due to covid-19; and I was working with one other person; and half of the airspace for our TRACON. Also; there have been a high amount of practice approaches during this time. Aircraft X was at 030 was cleared for an approach into ZZZ that has a one minute procedure turn at zzzzz [intersection]; and I had another aircraft I was vectoring into ZZZ1 at 040; which I waited until he was established to descend him; because the approaches come close to each other but don't overlap. I have never seen this type aircraft go as far out as aircraft X did; especially doing less than 100 kts; and so I immediately got off the line I was coordinating on and asked him if he was commencing the turn inbound; I then called traffic to him and he said traffic in sight and I asked that he maintain visual separation. I did not realize at the time that I lost separation; but upon review; the quality control staff found that I lost separation before I obtained visual separation.in the future; I would ask the pilot to report the turn inbound and wait to descend the other aircraft or I would wait until I visually observe this on the screen. I have worked many of these approaches in this type of scenario and I was anticipating the turn to be much smaller; but I realize I should protect for a larger turn; in case the pilot does something I am not anticipating. In general; these weeks have been hard because of the high amount of VFR traffic and the flight school operating out of ZZZ2; along with no d-side or coordinators and more airspace; longer time on position with many days off in between; and it just makes it a little harder.

Original NASA ASRS Text

Title: TRACON Controller reported a loss of separation due to an aircraft taking too long to turn inbound on the approach. Controller made reference to COVID-19 related issues contributing to the event.

Narrative: This event occurred during special staffing circumstances; in which we are working on skeleton crews due to COVID-19; and I was working with one other person; and half of the airspace for our TRACON. Also; there have been a high amount of practice approaches during this time. Aircraft X was at 030 was cleared for an approach into ZZZ that has a one minute procedure turn at ZZZZZ [Intersection]; and I had another aircraft I was vectoring into ZZZ1 at 040; which I waited until he was established to descend him; because the approaches come close to each other but don't overlap. I have never seen this type aircraft go as far out as Aircraft X did; especially doing less than 100 kts; and so I immediately got off the line I was coordinating on and asked him if he was commencing the turn inbound; I then called traffic to him and he said traffic in sight and I asked that he maintain visual separation. I did not realize at the time that I lost separation; but upon review; the Quality Control staff found that I lost separation before I obtained visual separation.In the future; I would ask the pilot to report the turn inbound and wait to descend the other aircraft or I would wait until I visually observe this on the screen. I have worked many of these approaches in this type of scenario and I was anticipating the turn to be much smaller; but I realize I should protect for a larger turn; in case the pilot does something I am not anticipating. In general; these weeks have been hard because of the high amount of VFR traffic and the flight school operating out of ZZZ2; along with no D-side or Coordinators and more airspace; longer time on position with many days off in between; and it just makes it a little harder.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

Attributes
ACN	1741388
Time
Date	202004
Local Time Of Day	0001-0600
Place
Locale Reference	ZZZ.TRACON
State Reference	US
Aircraft 1
Make Model Name	Small Aircraft
Flight Phase	Final Approach
Route In Use	Other Instrument Approach
Flight Plan	IFR
Aircraft 2
Make Model Name	Small Aircraft
Operating Under FAR Part	Part 91
Flight Phase	Final Approach
Route In Use	Other Instrument Approach
Flight Plan	IFR
Person 1
Function	Approach
Qualification	Air Traffic Control Fully Certified
Experience	Air Traffic Control Time Certified In Pos 1 (yrs) 1
Events
Anomaly	ATC Issue All Types Conflict Airborne Conflict Deviation - Procedural Published Material / Policy

TRACON controller reported a loss of separation due to an aircraft taking too long to turn inbound on the approach. Controller made reference to covid-19 related issues contributing to the event.