Kaur1

Good Qs.
Amrit Vela as it is known in Sikhi & Brahm muhurtha in Hinduism. Everyone has different calculations. 
In Hinduism / Ayurveda, Amrit Bela starts 1.5 hours before sunrise, lasts for 48 minutes and ends 48 minutes before it. Some say it starts 2 hours before sunrise. In either case it is essential to capture that sunrise window time.
In Sikhi, 
Days & Nights as divided into 8 pehrs (3hr duration each)are..
Times are true within a deviation of say ~15min.
3am-6am 4th pehr of night 6am-9am 1st pehr of day 9am-12pm 2nd pehr of day 12pm-3pm 3rd pehr of day 3pm-6pm 4th pehr of day 6pm-9pm 1st pehr of night 9pm-12pm 2nd pehr of night 12pm-3am 3rd pehr of night
Best sleeping times are considered to be 2nd & 3rd pehrs of night ie. 9pm-3am (Total 6 hours)
Amrit Vela is usually ascribed to 4th pehr of night, ie. 3am-6am.
If we go based on above calc, you need to find the sunset - sunrise time and divide by 8 and the last 4th pahar is ur Amrit Vela. This is the calc I use.
Waking up at 11 or midnight and doing Naam Jap until 2 am and back to sleep is not Amrit Vela. You need to continue into sunrise to hit the amrit vela time.
I suggest getting some sleep before starting Amrit Vela. After amrit vela is done you can sleep during the day. This is how most ppl do in India, who do service at Gurudwaras.
Good Luck

Thanks Veer g.

Yes Bhen Ji anyone can recite this bani. I have posted links related to this previously.
 

@GLA7 
No one can control bad thoughts, these arises due to our desires and deeds done in this or previous lifetimes. But it can be very much tackled, when bad thought arises remind yourself that you are not this thought, you are witnessing it and create a gap from it. And let go of it, do not pay attention to it or it will surely drag you down. Do this and thought loses it power and vanishes in a moment. 
Shaheed Singhs are, you can say the best possible sikhs you can look upto. They do not go around bossing people like we think. 
If person wishes to do Sri Dasam Jee Bani, and if not amritdhari, atleast person should correct his eating habits, be strictly vegetarian during the jaap and maintain no bad company, including movies, TV or internet garbage.
On a positive note, I heard that if Shaheed Singhs are happy with you and wants to give you something, even Guru Gobind Singh Maharaj Jee won't say NO to Shaheed Singhs wishes and agrees with them.
Good luck.

Bhen Ji here are links for both Sharda Pooran Granth and Mukt Marag Granth 
https://www.google.co.uk/url?sa=t&source=web&rct=j&url=http://www.rajkaregakhalsa.net/downloads/Gurbani%20Related/Sharda-Pooran-Granth.pdf&ved=2ahUKEwjFlPSrqNXZAhXlKcAKHQLAC6YQFjAAegQIBRAB&usg=AOvVaw1YL_RR4kTjQ60kM0JMXx1h
 
https://www.scribd.com/mobile/document/25542845/Sharda-Pooran-Granth
https://www.scribd.com/mobile/document/25185092/mukat-marg-granth
https://www.vidhia.com/Mukat_Marag_Granth.pdf