You could try googling for a whey protein isolate powder. These have minuscule amounts of carbs in them, less than a gram per serve. The key is always, what's in it? Read the labels, choose plain and avoid the rubbish used to flavour it. I do get one that I use sometimes, but I think it's only available in Australia and maybe New Zealand. You can use them to make drinks and add to low carb desserts to get that extra protein you may be missing. I don't use them as meal replacements, but can come in handy if being out for long periods of time and you have to watch you don't lose too much weight while hiking and activities like that.
If you do, make sure it's not rubbish, most protein powders are absolute rubbish filled with sugar and additives, preservatives and fake flaours etc. You could easily reach your protein goals and not be using much at all. You don't need the full serves as directed on the container imo.