Do NOT get baptised. Save yourself and your family a lot of grief by NOT doing it. Who cares if the person studying with you will feel that time was wasted. They are counting their time with you, giving them brownie points. They benefit from "your arrangement" far more than you ever will.
As far as the goals, simply decline to accept those as your goals. State clearly that you do not feel that his goals for you are your goals. You want to take your time to read and study. This isn't something you take lightly and will not be rushed based on someone else's idea of an appropriate timeline. Say thanks, but no thanks. A study is fine for now, but no other goals, please.
And regardless of goals or no goals, just don't get dunked. Period. You are surely able to stall for time. And if everyone is pushing hard, when you have conversations with the elders, you can state this isn't what you feel is appropriate for now, and you feel that others are forcing you into this. Put it back on them.
Finally, even if someone has driven you to the assembly and escorted you in, don't get in the damn pool.
Stay dry,
Lav