I agree with annamum. I had a similar situation a couple weeks ago. Around Aug10-11. My lo was 4+ months old and he was nursing only a few minutes each side. He did however love the bottle. I was to the point where he absolutely would not nurse and wait for the bottle. I decided that I wasn't ready to wean him so I took away the bottle. Unfortunatley for Thomas, I had made the mistake of giving him too many bottles. It took only 2 days for him toget back on track, but it was hard. I only breast fed him, whenever he cried, so it was alot of times. He is now back to nursing every 3-3:30 hours and I know I have lots of milk. This is very hard, but stick to your guns if you don't want to wean you lo.
good luck...