Drink water. Drink at least 1 glass of water at every nursing session.
The more you nurse, the more your supply will up. Nursing is a supply and demand situation. The more you allow the baby to suckle, the more milk your body will make.
Do not give bottles. Replacing a nursing session with bottles gives the opposite effect of what your goal is. Your body will stop making as much milk. If you do replace a nursing session with a bottle, use a pump during the same time that you'd nurse.
You can also pump in between your nursing sessions to increase your supply.
I'm curious, why are you trying to increase your supply?
As far as Fenugreek goes, I've not taken it - but you won't stink like a maple syrup factory. You may smell faintly of sweets but people won't be asking you if you bathed in syrup.

I have friends who swear by it and others who said it doesn't work for them. It is worth a try though.