My dd is 11 weeks old. Been trying to give bottle of ebm or formula in order to gradually wean her from breast to bottle. using avent bottles and teats but she wont feed from them and either screams when they go near her mouth or if more relaxed then will allow them to roll around her mouth for a while but wont suck. she has drunk ebm from same bottles at around 4-5 weeks for a couple of feeds with no prob so why not now? have tried dh feeding her but no better results. any advice?