Thanks mrsD, I appreciate your help!
I googled about the risks but didn't know about the brand name discontinuation and the possible reasons for this.

This is a tough decision, and to add to these risks, when I tried it 15 years ago I had to stop after 2 weeks because of an allergy reaction. My rheum now suggested that I undergo desensitization to Plaquenil.
This rheum and another one that I consulted with told me that it is considered as a relative safe drug. But when reading online it doesn't seems so.

On the other hand, it has been almost a year since I took a sick leave. The rituximab is helping but for too short duration, and I have to find a way to return to work.

As far as I understand the major risks are when taking plaquenil for many years?
My neuro said the effect of the rituximab might increase and it is possible that within 1-2 years the effect might be more stable. So maybe the plaquenil could help me till then.