im going through the exact same thing as you!!! my dad encourages me to eat meat, drink etc wtfs going on?? you would think your parents would support you but noooo does my head in mum even stops me from doing paat sometimes as she thinks im being too militant so she told me to stick to kirtan (as if). But you know what i think if you've come this far now you've defo bin blessed by guru ji so keep doing what your doing and dont let anyone get in the way of your sikhi. Your parents are just finding it difficult because your lifestyle is going to differ from theirs but when they see your dedication and realise how much it means to you they'll come round. Dont worry about it too much, things will change with time.