I used to trim my previous cats' nails when they were sleeping. they didn't care at all, i would take their paws in my hands, gently express nails and snip snip snip
so why not if ET lets you do it this way
with my current two, they dont like me touching their paws that much (I guess they are not that used to me yet, they are with us for 2 months) so what I did last weekend is that I took thick towel, put it on my lap, put Josie on my lap, her face facing forward, her butt and back legs between my tights, and i put my arm underneath her front legs, gently leaning on her with my abdomen (but not that I would crush her
just to hold her in place). then with my hand I expressed her nails, and quickly trimmed. My husband was sitting next to us and he was gently holding her scuff, because she sort of freezes when hold there. it took me about a minute or two to trim her nails. The key is to find a position the cat cannot wiggle too much and you must feel confident - ET will sense you are anxious and it will be harder then.
do you have those special cat scissors to trim cat nails? I have a pair forever and I love them.
this weekend we are gonna do Blackberry's nails. he is more of a fighter than Josie so I am sure he will hiss at me, but well, his nails are long, so kitty has no choice
and I always give them treats immediately after trimming.