My girlfriend is really good at getting to stroke them but me not so much and vice versa with food.Just based on how I’m working with 2 new piggies how about when you clean the cage giving them each a cuddle.
My baby Phoebe is very shy and skittish so the first time I picked her up in a snuggle pouch and she sat on my lap in her pouch while I gently stroked her.
On Saturday she came out in her pouch but allowed me to take her out of the pouch and sit on my lap for a short while before she went back in the pouch
It takes a lot of time and patience but it sounds as if you’re doing really well
I still think you need a piggy feeding song so the piggies know humans are harmless idiots! Last weekend (after a few glasses of prosecco) I decided to sing a piggy feeding song to the tune of the sailor's hornpipe while dancing round the cage throwing in handfuls of hay and coriander: "Piggy pig pig pig, piggywiggypiggywiggypiggy pig pig pig, piggywiggy pig pig!" Jezebel and Piggle were following me around and dancing too, they were up on their hind legs begging for coriander, but Clover and Puggle think they are just too cool to join in with that sort of thing...Have you read this guide yet? It is very good.
Settling In And Making Friends With Guinea Pigs - A Guide
Mine go mad when they hear me say "dindins" cos they know they are getting their veg dinner.