My lo is 6 weeks old and we've been ebf, but I've been trying to build up a stash of expressed milk and pumping for about the past week. I've been able to pump at least 80-100 mls in one session, but the past few days I've only been able to get 30-40 mls in one session. I've picked up a cold in the last few days, would that affect it? Or is my supply tailing off? LO is feeding regularly and gaining weight - he is now on the 91st centile, so not worried about him, but I would like to continue pumping for the time being. Any tips, please?