I feel your pain. Shelby is 7 months old and I have been attempting this since I got her at 12 weeks! I tried everything to get her used to the trimmers but there is no way I would try getting scissors near her.
I have trimmed her feet, bottom and ears 3 times now. It takes me about 3 days LOL
The most successful way I can keep her semi still to do ears and feet is spreading honey on something. While she licks it off I trim away. to do her bottom I put on an attachment so it wasn't too short, them held up her tail and quickly got her.
I wish she was more cooperative but I am not taking her to a groomer. too many horror stories.
good luck.