Quite interesting topic as I am also a Hotel Management graduate and loved baking too those years.
So to answer your question, you need to attend any renowned culinary school or other institute for professional baking and pastry diploma.
It ranges for various duration so depends on your choice as how serious baking you want to get into.
Just remember to check the curriculum, duration and fees for your baking school as the better training you will get in early years the better baker you will become and eventually a big job in a star hotel or a restaurant.
Best part is every restaurant or Hotel or cafe where people come to dine in, there is only one sweet-spot which is the cake/pastry counter. So you really need to be distinct in your baking cake or a bread of distinct taste.
But always remember that normal culinary school/college teaches "something of everything" hence as you are interested only in Baking especially so enroll yourself in big and famous baking school where they will teach ONLY baking holistically. Also check if they connect you with the industry/hotels for your internship, then it will much easier for your job placement. Dont forget to have your youtube channel or FB page to brand yourself as often you land in famous places thru these initiatives.
Suddhasattwa recommends the following next steps:
Find out if some local bakeries have apprenticeships, internships for students (whether they partner with local schools for training linked to coursework credits). Talk to your parents about what kind of work environment you would like to thrive in (small business or large company?).
With guidance from teachers and parents, research the following programs and thoroughly discuss the programs that you are interested in with them before deciding:
Research each training program and ask questions about career outcomes (hours, salary, teams, location, etc).