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Can I setup ADSL modem by connecting it to an optic fibre modem that provides a RJ11 output?

Right off the bat I would like to state that I have a very basic understanding of computer networks.

The previous internet setup that I had was – RJ11 cable from the ISP box connected to a D-LINK DSL-2520U modem that was connected to a TP-LINK TL-WR841N Wi-Fi router via RJ45.

The current internet setup I have is – optic fibre cable from the ISP box connected to a Dragonpath 707GR1. This device also provides a RJ11 output to which a telephone is connected.

Since the move to optic fibre the old setup is lying around collecting dust. Hence I would like to know if it is possible to setup the D-LINK ADSL modem through the Dragonpath fibre device via the provided RJ11 connection that the telephone uses currently?

I am very well aware that it is possible to connect the TP-LINK wi-fi device to the Dragonpath fibre modem via RJ45. However, the intention here is to make use of the old D-LINK ADSL modem too if possible.