Need a script or downloader

I need a script or downloader to get pdfs from this site- sci-hub.se. It has mirrors. This is difficult just as a forewarning. The site generates a pdf once you input a doi like this- 10.1163/18754112-0220104014. There are batch tools out there on Github like pypaperbot for bulk extraction. However these existing ones are very slow and cumbersone. For instance, 300 dois take anywhere between 10-15 minutes . This isn't feasible for me who has a ton of dois. I would need something that would get me those 300dois, for instance, in a minute or so(very important). Existing problems with the site- it has measures to block continuous downloads. It works on an on/off pattern. A request for 300 pdfs would generate 30 good pdfs, then blank pdfs for a while, then good ones again. So that's the core problem. So anything that would tackle this and get me the pdfs- uncorrupted and at a greater pace. If at all it's doable, I would need to see a working prototype or something feasible before awarding the project. Best of luck.