Answer:
(Fatwa: 911/911=M/1430)
If you want Allah to help you, you must help the religion of Allah, do not commit any negligence towards Shariah matters. The best amal is to perform five-time salah regularly. Also, you should recite Ayatul Kursi after every salah and supplicate to Allah, in-shaAllah it will cause blessing and prosperity.
(2) He should turn his head for salam and perform sajdah sahv the same time he remembered, the salah will be valid. There is no need to re-perform the same.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband
