My son is 28 weeks and breastfed (plus solids for the last few weeks). For things like porridge etc I have been trying to express and am conscious that when I return to work in November he will probably need to go to the childminder with one bottle/cup of expressed milk. However, quite often when I try to express without him on the other side my efforts are pretty fruitless. Any tips on how to improve this? Many thanks.