A generic KY (NO HE DIDN’T SAT THATTTTT!) type water soluble lube can be had at any pharmacy.
Just add some condoms to the order so you wont be embarrassed by the lube.
I’ve tried it, other than odd looks you get it works well and washes out clean. I wouldn’t use a petroleum based lube as it is probably hard on aquatic life and neoprene.
A few plastic bags in your dive bad work well for getting your feet through the ankle of a wet suit.
I guess wet works if you are diving warm water, but light weight wet suits aren’t the problem it’s those 7mil cold water suits.