Powering MDBT42Q through a lipo circuit

Hello y'all. I recently bought the MDBT42Q breakout board for quick prototyping as well as a few bare modules. As my prototype on the breadboards works, I want to design and order a few PCBs.

In the bare module documentation, it is noted that:

A 3v non-rechargeable lithium cell is ideal for this (LiPo batteries have a voltage that is too high and will need the voltage dropping with a diode or voltage regulator).x

I was hoping if someone has any examples of circuits powering the MDBT42Q module. My goal is creating a prototype with a LiPo charger on board via a USB port, so any help, schematics or advice will be highly appreciated.

Thanks in advance.