How much pressing detail is too much at U11?

I think you are close to the limit already. U11s can recognise useful pressing pictures, but I would rather have two that the whole team understands than five triggers that only appear when the coach reminds them. For example: can we go when the receiver has a poor touch, or when the ball travels backwards and teammates are close enough to help? The second part matters more than collecting triggers. If the striker sees the backward pass but nobody behind them can support, the press still fails. I’d put the triggers into a normal directional game and stop naming them every repetition. If the players recognise the moment themselves, keep it. If they only press correctly when they hear the keyword, simplify it.