Namaste

Sri vaishnavas believe in what they call "the three secrets":

1)Ashtakshara (Thirumanthra)= Om Namo Narayanaya

2)Dwaya Manthra= SRIMAN NARAYANA CHARANAU SARANAM PRAPADYE
SRIMATE NARAYANAYA NAMAHA

3)Charma Sloka= SARVA DHARMAN PARITHYAJYA MAAM EKAM SARANAM VRAJA
AHAM THVA SARVA PAAPEPBHYO MOKSHAYISHYAMI MAASUCHAHA(Bhagavad-gita 18.66)

My question is if I may recite the Ashtakshara and the Dwaya Manthra (using my japa-mala of tulasi) without initiation from a Sri vaishnava acharya

Pranama and sorry for my limited english