Ideas for building/maintaining muscle while low carbing please

Up your protein, but not massively. It's something of a myth about the protein needs of strength athletes. If you want to go low carb, I'd replace that energy content with predominantly fats.

Make sure you are having good fats, olive oil, rapeseed oil, coconut oil, oily fish, butter and cheese are OK as well. But be careful not to end up with excess calories.

Teh problem with protein is that excess gets metabolised to carbs, which in some people can give significant blood sugar spikes