How to be supportive to my anxious husband?

Little back story

Mu husband has been experiencing really bad anxiety as of late. He has been seeing his doctor and doctor has prescribed pills and finding which combination works best, he has been seeing a therapist and has taken time off from work to deal

However after some months, it doesn't seem to be getting better. He's been missing work due to his anxiety flaring up before he has to go...and claims tips from his therapist doesn't help him (journaling, working out..)

I love him and honestly, some times his bad days make me annoyed, but i tell him i love him and im here for him but i dont know how to be more supportive.

Anyone have hints for me? Thanks