Depression. Counselling only help him?

My husband is in serious depression after joining office after lockdown.But the main cause of depression is marital issue..there was no prblm between us other than gnrl family issues..we are very happy wd each other but suddenly he become so depressed after one day of qurelling..since then he is constantly thinking about past issues..nd suddenly become hopeless...and too much anxiety in him.constantly thinking negative..sleepless night..low apetite..and some time felling suicidal..gather a hated towards me.nd wdout any big cause he wants to leave me..this is running last 2 weeks..we are taking counselling..will this help him or he need medication..our psychologist is reknown but she dont want to gv him medication.she is doing relationship counselling in our case..nd giving me hope not to worry about..what to do now.i m feeling helpless as he used to love me alot..nd also one thing to mention about his worklife is so hectic,another cause of depression..will  counselling only help him?