well with me it has changed over time
i started off on 3 shakes a day which got boring real quick then i started using the meals and bars for variety
then i went through a phase of 4 meals perday 2 porridge , one spag bol , one chilli
now I generally have a shake for lunch but watered down , split in half and about an hour in between , so 12 and 1ish then in the evening I have spag bol or chilli with veg then porridge and a bar before bed
so I have been able to adapt it as time goes by , Im not sure whether there is much difference in weight loss when comparing 3 packs to 4 or shakes to meals , i think it would be negligible
the most important thing for me is to find a combination that doesnt make it feel like hard work and therefore you be able to maintain it long term , if that means a slightly slower loss then so be it , Id rather that than fall of the wagon because its intolerable