CR90 with a 130-150W

I thought I was doing the smart think to future proof my PSU but I don’t know if is possible to reduce a 130-150 PSU to work safely with a CR90 tube.

Until now I am on alignment step. So I haven’t use it more that 20. I am going to try to reduce the mA on 50% to be around 11mA so on 100% to be 22-23mA that is on the safe range of the tube.

But I wanted to ask if that low is possible and also if is safe for the PSU?

The method is feasible, but doing so will affect the life of the laser tube