Why did Imam Khomeini not encourage his grandson to perform midnight prayers?

Imam's quiet companion and pleasant companionship

Ahmad Khomeini had great virtues, sacrificed himself for Imam

Source: Ambassador of the Imam and the Revolution (Memoirs of Hojjat al-Islam and Muslims Seyyed Ali Akbar Mohtashamipour)

Leave me alone during Ramadan, Imam Khomeini told his fellow clerics and clergies

A memoirs by Hojjat al-Islam Mohammd Sarouh Mahallati

Imam regularly kept reciting Ziarat-e- Ashura even during exile in Nofel Loshato

A memoir by late Hojjat al-Ismail Ferdousipour

Imam Khomeini called for the boycott of Israel in 1967?

A memoirs and statement by the supreme leader

Trust in God

Imam told his family members that they were alike ordinary people.

A memoirs by Sayyida Farideh Mostafavi Khomeini, Imam’s daughter