Ahhh sorry, I haven't stated that - I used only EBM for first 4 months as was afraid of supply issue. However I also couldn't express at once more than 50-100ml being honest but I was usually expressing just after feeds throughout the day (even 10-20ml) and was summing all the BM in one portion for the baby, altogether it would be 70-160ml. Than I was expressing on the time of a missed feed so my supply wouldn't be affected and freezing for better times.
So in summary bottle introduced early didn't harm us but we used it really consequently but rarely (like 1x a week) and only with EBM. DS also had never had any issues with latching and sucking, his latch was almost perfect according to LC. I also used dummy from early on and also no issues. When at 4mo I introduced FF it was only as an addition for the BM DF. I was firstly giving DS what I have expressed through the day and than if he wanted more I was doing additional portion of formula.