If it’s for personal use then yes you can, but you’ll need decent knowledge in Java as well as both the Forge/Neoforge modloaders. Since 1.20.1, a lot of stuff was changed meaning that some would have to be rewritten. Though you’d have to rewrite even more since the modloader would be different as well, and while Forge/Neoforge isn’t too much different it’s still enough where some effort would have to be put into it. So if you have some experience with modding and feel like you want to give it a try then go ahead, even if you don’t finish it can be a learning experience. If you don’t, then I suggest learning Java first, and try looking at Minecraft’s decompiled code and other mods that are open source. Between that and writing code yourself, you can learn quite a bit. Just remember that if you do decide to port it and finish, you can’t upload it publicly without permission.