I am going to try and start combination feeding Frankie. I will swap one of her day time feeds for a formula feed. I have decided not to express as I have no where I would feel comfortable expressing at work. Anyway I did this fine with Jonny but was wondering if I can use beakers or spouts on bottles instead of teats, so she still differentiates between breast and formula? Has any one else tried this? Can they suck on these at this age? Help please!