Ukraine fighter pilot: I could learn to fly western jet within three months(theguardian.com)
theguardian.com
Ukraine fighter pilot: I could learn to fly western jet within three months
https://www.theguardian.com/world/2023/feb/09/ukraine-fighter-pilot-i-could-learn-to-fly-western-jet-within-three-months-vadym-voroshylov
If you have experience with the Mig-29 then the F-16 won't be a big deal to learn honestly. Mig-29 is a death trap by comparison. I think the biggest deal would be getting used to the low displacement side stick and the fire control. Fly by wire and superior avionics make the thing much easier to train on. It's been intentionally made simple for export anyways.