Hello..Pawan ji... What type of mental illness ur father is suffering n what medication he is using we donno so it's not possible to give a suggestion u better consult psychiatrist nearby and get evaluated..
Next Steps
mental illness also disturb sleep so treating mental illness also very important while treating insomnia..
Health Tips
sleep hygiene is very important..
1.no daytime sleeping..
2.no late nyt dinner
3.regular physical activity
4.early to bed and early to rise
5.dont use bed fr other activities (other than sleep) like laptop n cell phone
6.no coffee products aftr 6pm
follow these things n get treatment from psychiatrist..