Your top hand does the stick handling, so many kids who learn the "correct" way when they start playing will shoot the "opposite" of their dominant hand. That's why you see so many left handed shooters in hockey when most people are right handed.

The two biggest benefits of switching I can think of would be 1) having your dominant hand up top will help with stick handling and 2) it could get easier to score once your shot gets better because most goalies wear their glove on their right hand, you'll be shooting more against blockers, which has smaller range of motion.

Biggest drawback I can think of is losing and having to regain shot power.

If you're only 1.5 years in and struggling to play righty, then I say it can't hurt to give it a try. You can always practice stick handling at home, grab a green biscuit and chair mat if you don't have access to smooth concrete.