Put you and him in a dark room with no distractions. I had to stop breast feeding my son at 7 mos cuz he got the bottle (with breast milk) when i was working or we were out and about and the breast when we were at home. He realized at 7 mos he could multi task with the bottle (i.e., look around at his surroundings) and he couldn't with the breast. The first tme he tried to look around while latched on to my breast (he also had 7 teeth!) was the time I decided to give up breast feeding!
Struggle thru the next month or so, before you go to work, at bedtime and nap time if you can, and he will start to settle into the routine. Breast feeding is a wonderful bonding time and settles everyone down, but if it doesn't work, you can do the same with the bottle.
Summarized: try it for a few weeks longer, in an area where he and you aren't distracted, and see how it goes.