Should I change careers in software at 44 with 2 years of IT experience?

Ans: Everything is possible. But you need to know the demand of the market. So go for a certification course of AI and Machine Learning. It will be a 6 months course and before going for that for two months view different videos about the subject in YOU TUBE and prepare notes. Your age is in higher side, but it is just a number. Be self-motivated. No one will motivate you, but I am always there to listen to you.
Just go through your old experience. Be bold. The world will be yours. Follow me here and join me in LINKEDIN for having time to time counselling. I solved thousands of problems through counselling. I will always help you. ALL THE BEST. GOD BLESS YOU. Professor..................:)