I'm an exclusively pumping mum.. and I am trying to wean my supply.. how do I proceed to do so?

Start off by dropping one pumping session at a time. Try to stop one pumping session every 3-7 days. For example, in a day you usually pump 3 times; drop the first session on day 1 (while pumping as usual for the other sessions), the second session on day 4, the third session on day 7, etc. This will give your body an indication to stop producing milk. This website offers some other good tips on how to wean off if you have been exclusively pumping: http://exclusivepumping.com/weaning-from-the-pump/