It is wonderful that you wish to make your own the promises made for you at Baptism.
If you are in year 9 or above, candidates can get an application form from Monsignor Roger after any Sunday Mass for a few weeks in the autumn. So if you’re coming to Mass every week you won’t miss out.
In the meantime, contact the parish of your Baptism and get a Baptism certificate if you don’t have one at home. And think about a sponsor: this person must be over 16, Confirmed (ask them now to get a copy of their certificate), attend Mass every week (ask them now to get a certificate of attendance from their parish priest), and cannot be one of your parents.
The programme consists of 10 sessions on Monday evenings from 7:00pm to 8:30 pm usually between December and Easter but not during school holidays. If for any reason you miss a class, there is a compulsory catch-up session the following week at 6:00pm.