Hello Prabhat,
No, you cannot take Finals just after IPCC without articleship as it is mandatory and one must complete at least 2 years of training before sitting for the finals.
Even if you take a dummy and not do the actual articleship you will still have to wait for 2 years before giving the exam so it is always wise to do the articleship wisely as it gives you a lot of practical exposure and experience about this field.
In articleship an article is trained to deal with real life situations and challenges that CA faces so that he can be well prepared in advance and made sure that his knowledge is not limited only to books but also to practical situations.

Hope this helps,
Good Luck!