I don't know the reason for your request, or if it's about a small or large quantity - but you can easily find on various papers the synthesis route.
This is one of the most recent:
https://www.tandfonline.com/doi/abs/10.1080/00397911.2021.1919710?journalCode=lsyc20
Pregabalin is very cheap to buy. Even more interesting probably 4-MethylPregabalin - this is considered an RC and is not scheduled (well, in most countries, please check for your country) , apparently stronger and giving better results.
Just some hints, if you want to synthesize it for your own interest or other reason of course it's totally OK :>