That doesn't sound right... all of the Nordic designs I've seen have been exceptionally low power. The internal LDO / DC-DC blocks for running directly off of a battery are sized for <100 mA. Even with bypass caps, 2A spikes seem like the wrong order of magnitude for a chip that can run off of a coin cell.

I have an nRF52840 design, and I've never seen it draw more than low ~tens of mA during BLE transmit spikes, even at the maximum transmit power setting.