Stick to one shake per day when you need a convenient meal. One or two scoops doesn't really matter as long as you figure it into your macros.
If you have time forgo the shake for a solid meal of protein, carbs, healthy fats and vegetables.
Honestly, I don't know how your body responds to carbs but it seems like your consuming a lot. Plus for what it's worth healthy fats are usually less expensive than carbs.
As a rough estimate I put you at around 180g carbs a day. Personally I don't really like to go over 150g.
You just need to play with different macro ratios, then give it a few weeks and see how your body responds.
You're too young right now for AAS, but using AAS at any age is a waste if your diet isn't spot on.