My dd 25 weeks has been really impatient waiting of the let down the last few days / often she is do busy crying and pulling off that it starts when she is pulled off and I have to force it to her mouth to show her it is there. When it slows she fusses again and is ok on the other side for a little while and then she fusses so I have to just distract her. Is this a growth spurt - not really had it before / a bit of fussing but never this much.