Been there done that. Held a Dutch PPL/IR in the late 90’s moved to the us in 01 and quit flying. Started again last year, treated it as if I’d ‘never’ flown before. Lots changed in 16 years for me, probably not as much as for you though. The general consensus seems to be that it takes at least an hour of training for every year you haven’t flown, for me that was more like 2.5 hours for each year though.
Id say, go to a flightschool, go fly with an instructor and let them determine what you need to get flying again.