I need help on how to do all the grooming stuff on Joel. They say puppies will let you do stuff to them but he freaks out when I go near him with brushes or anything and I feel so bad when I try to.
Like puting on his harness, he is terrified of it and shakes the whole time and cries. I dont want to baby him but he makes me feel so bad. The other night I put it on him and he was shaking and I didnt want to take it off while he was shaking to make it like I was saving him from it, so it took 20 min. until he finaly laid down and I took it off.
So anyway I need advice on all that stuff, brushing, clipping nails(I can do it when he's sleeping but I dont want to have to clip his nails in his sleep when hes 8 years old! Lol), brushing teeth and the harness. My sister thinks I baby him and she gets annoyed at me, lol. But I dont mean to and I dont want him to grow up to be a wimpy dog. And Ive tried using treats, hes just scared of them, he doesnt even like peanut butter

Hes practicaly scared of his own food but eats when he's hungry, and hes also scared of spilled water.........anywhere.
And my sister thinks to get him used to his harness I should make him sleep in it and leave it on all day,and it makes sence and I kinda want to try it but Im gonna feel sooooooo bad, but I know eventualy he'll get over it. Sorry but im so worried im gonna mess him up forever, and those eyes! Oh my goodness how do they look so sad and cute! So any tips would be helpful.