How tall are you?
For six weeks in, your progress isn't awful, but you're not setting the world on fire either. BP and DL are progressing pretty close to on schedule, but yeah, your BP and OHP aren't. What's your anthropometry? Long arms, perhaps?
You should post form checks in the Technique section.
Your nutrition sounds awful. You should probably be at 250g P/day. Read
this. If that doesn't answer your nutrition questions. Search the Nutrition forum. That should give you all you need to dial in your food. If you still need more, ask Jordan.