Yes. It is possible but not recommended.
You can activate Ajna chakra through mantra, tantra, yantra and yogic and religious practices.
You could take years to awaken your Kundalini Shakthi.
Since you are not used to observing your life force, it takes years of practice to feel it.
What would you do after activating your Ajna chakra?
You must know how to bring it back to Muladhara chakra.
Only then will you be able to manage the activated Kundalini energy.
Without Shanthi meditation, Kundalini yoga could be dangerous.
I recommend that you avoid trying to awaken Ajna chakra without proper initiation.
Visit a Vethathiri SKY Yoga centre near you to awaken it safely and easily.
Be Blessed by the Divine!
Krish Murali Eswar.