Yep, I agree about keep grooming them just a little at a time. Both of mine when they were younger would fight me like crazy when I tried to brush/comb their hair. But little by little, over time, and with age, they became used to it and will sit very nicely now whenever I groom them. I actually think they kind of like it. I can even give them amatuer haircuts now too.
Oh, and by the way.......Welcome to YT!