Take only your iPhone and one other device if you need it.
You need far fewer electronic devices than you think. All I carry is my iPhone and my iPad Pro. Done. My rule here is very simple: take a phone and one other device. Unless you have a major reason why you need three devices, take only two. For me the second device is my iPad Pro, and before that it was my MacBook. If you need a Mac, take a Mac and use your phone for anything else. But decide if you even need that second device — I take mine strictly because if I can squeeze in writing time, it is worth having the iPad Pro. But I could do it all with my iPhone if I wanted.
There’s lots of ways to talk yourself into taking one more device, but I’ve always found that when I travel with three devices, one will always go unused. There’s nothing more frustrating than lugging something around you don’t use.