Flying an approach can get a bit like the proverbial 'alligators & swamp draining' scenario ie it can be difficult to prioritise. Single Pilot approaches is very like a one armed paper hangar!
One way to keep your mind focused on the next most important thing is to continually self brief the most important info. I use & teach 'T.A.A.': Track Altitude Aid.
Track: Next direction of turn, HDG or Tr. to intercept, set HDG bug/OBS if possible.
Note: 'tracks' are to be intercepted. Headings to be held.
Altitude: Next target altitude + next altitude limit
Aid: Flags away (VOR/ILS) / Ident OK (NDB) + set/tuned if a change is necessary. Of course, given enough boxes then you'd make sure these were all set prior to commencing the approach.
This would be done as soon as you've got yourself established on each preceding leg ie prior to each turn or as each limit is reached then repeated until the next data set takes over.
Some various examples, swapping a various things along the way:
Sector 1 entry: "Next: RIGHT turn. Head 180 (set hdg bug) outbound 1 minute. Not below 4000. Ident OK."
Once that's exececuted: "Next: RIGHT turn. Track 360 inbound. Not below 4000. Flags away."
etc etc on each straight leg.
Inbound, ready for the approach. If not ready go round & round & round the holding pattern until you are!:
"Next: LEFT turn, track 349 outbound 1 min 30., Descend 2500. Flags away."
Established outbound: "Next: LEFT procedure turn. Track 169 inbound. Not below 1800 until 6 DME. MDA 750. Flags away"
Established inbound: "Missed: RIGHT turn at 1 DME HDG 030 (set bug) to track 123 inbound (xyz aid). Climb 4000. Flags away."
etc etc. The idea is to keep uppermost in your mind the next most important information.
It's what I was taught, still practice & teach. It might work for you.