Oskar had his nares and pallet done while getting nurtured plus a liver biopsy when he was 7 months.
I was worried but it went extremely well and his recovery did too.
He didn’t need to wear the cone, I’m guessing initially because he was well medicated.
I wouldn’t fret too much, if a cone is needed then most pet stores carry the inflatable ones.
Your little dude will do great! The hardest part for me was not having him home overnight after the surgery- I missed him too much even though his vet is our neighbor and the staff kept sending text and video updates.