Considering your Boehmei is the same sizeish as mine, I found that it took about 3 weeks to moult after it darkened.
My little slings are taking ages to grow. Shiva last moulted at the end of May, and Tequila the start of June. Neither of them seem to be eating for the last couple of weeks, but still no moults from them. I decided to put a heat mat back in place in hope that keeping them at a higher temp might speed their metabolism up. They certainly seem to be spending most of their time near the heatmat side.
My little slings are taking ages to grow. Shiva last moulted at the end of May, and Tequila the start of June. Neither of them seem to be eating for the last couple of weeks, but still no moults from them. I decided to put a heat mat back in place in hope that keeping them at a higher temp might speed their metabolism up. They certainly seem to be spending most of their time near the heatmat side.