What better support, than what you already have. And please, ask yourself:
- Who can make you learn to produce the sounds that you do not have in the same way you produce the ones you already have?
- What happens when you start speaking another language without owning their sounds and the way they are produced in that language?
I answer this quickly: You begin to assimilate a set of errors that later you have trouble to overcome. Therefore, please do not cheat. Do not start repeating without possessing the sounds of the language you want to learn.