I went from size 1 to size 2 (same teats as you) as Caitlin was the same - a lazy drinker

never tried the variflow!
Definately NOT size 3 - 100% not! We tried her earlier on them too since she'd been on teat 2 since near enough newborn but they are still too fast - shes fine with teat 2.
Caitlins still imo a lazy drinker and have started to wean her.