ANSWER:

Repentance is not accepted until there is deep remorse eating away at your heart. It is when you stop feeling this that you need to be worried!

How long Tauba Nasuh should be and should it be remembered and felt remorse every instant,of time. After fulfilling the requirements of Tauba Nasuh and acknowledging sinning as bad and abstaining from committing sin, and stop remembering my past sins and stop remorsing over it. As rembering it all the time and feeling remorse is very tiring and energy consuming