Yes, It is possible to awaken two or more chakras within a short period, but I do not recommend it.
You will need sufficient time to practice meditating in each chakra to feel the tingling sensation of your Kundalini before proceeding with the next chakra.
Swamiji recommended that you meditate in Ajna for a week and then learn Muladhara chakra Shanthi meditation.
Practice Shanthi meditation for a week and then learn Sahasrara chakra Thureeyam meditation.
Practice Sahasrara meditation for three or four weeks and then learn Thuriyatheetham meditation.
Practice Thuriyatheetham meditation for a month or two and then learn 9-Centre meditation and other higher-level meditation techniques.
Vethathiri SKY Yoga meditation workshops are designed in three levels to help you master each chakra.
Be Blessed by the Divine!
Krish Murali Eswar.