Upasana of Dakshinamurthy
Hello, I am having some doubts regarding dakshinamurthy upasana. As per my understanding, before doing any deity's upasana, one should know the stories and tatva of the deity. Reciting stotras, doing japam and dhyaanam are the parts of it. But what confuses me is, that there are abundant stotras of dakshinaamurthy(astakams, varnamalas).. and chanting all of them is a bit tiring for me(idk why). But when chanting the same stotra(viswam darpana) while also contemplating the meaning , for certain number of times doesnt leave any fatigue on my mind. Why is it so? and is it necessary for a upasaka to chant many stotras?? and what about japam and dhyanam? For dakshinamurthy there is a universal mantra "shivaya guravey namaha" that i have been following. But what i wonder is i am unable to do more than one maala in a sitting. How to over come this and how many maala should one do in a day atleast?? And those who did dakshinaamurthy upasana, I need some advice on "How to do dakshinamurthy upasana". out of japam,dhyanam and stotra patanam, which should be given more focus to. And what other do and dont's one should get familiarised with. Your advices will really help me in this regard.