A.M.
My son hated it too for a long time. I tried a lot of these suggestions (new brush, singing, brushing w/him, etc.) We had to fight for awhile till he realized I was gonna keep doing it. Now he gets to chew on the brush first then I just follow with a good once over. I started saying that I was gonna tickle his teeth and he thought that was funny and cooperated more. I think a lot of kids go through this, just persevere it'll get better.