Has anyone had to switch meds due to the worldwide shortage?

I've been told by my provider that due to the worldwide shortage I have to try something else.

Currently on elvanse (vyvanse in the US). Opted to try Amfexa which is still dexamphetamine but not the "slow release" that lisdexamphetamine is.

Nervous about the switch after finding something that works on my first try.

Has anyone made the same or similar switch?