Dear aspirant. There are number of U.G ,  P.G and diploma course available  in Anesthesia.

Duration of Diploma level program is 2 years .Minimum eligibility to appear in this course in 10+2 with an aggregate of 50% and above in PCB. Selection is based on merit of class 12. You can pursue -

Diploma in OT And Anesthesia Technology

Diploma in Anesthesia Technology

Diploma in OT And Anesthesia Techniques

Number of B.Sc programs are available in India.Duration of B.Sc course in 3 years. Aspirants who  passed 10+2 with minimum 45% marks in PCB can appear

you can apply  for-

B.Sc in  Anesthesia

B.Sc Anesthesia Technology

B.Sc Operation Theatre And Anesthesia Technology

B.Sc Operation Theatre And Anesthesia Techniques

B.SC Medical Technology ( OT and Anesthesia Technology)

Post Graduation Diploma In Anesthesia- duration 2yrs.

Post graduation in Anesthesia- last for  2years,  Eligibility- graduation with PCB.

M.Sc Anesthesia Technology

M.Sc OT and Anesthesia Technology

M.Sc OT and Anesthesia Techniques

So ...there are plenty of options available you have to simply choose and work hard..good luck