I sleep between 3.30 am to 8.30 am. I tried everything - medicine, yoga, gym, walking, less stress, less screen time but still problem not resolve, please advise

Ans: You can try going for a walk after dinner, if you tire yourself physically you might sleep better. Try exercising during the day. Avoid stimulants like coffee after early evening.
This of course is generic advice, ideally you should meet a physician who specialises in sleep.

Ans: Sleep is routine which needs discipline in one's daily activities which needs a hygiene and rhythm. Adequate physical activities,
Early dinner before 7 pm, no visual/mind stimulating activities after 8pm and unwinding from the days work by 8pm are some of the tips to have good sleep. Sleep is very important deprivation of sleep has long drawn consequences. Please consult your doctor for any organic causes for the same

Ans: Hi,
Your eating and sleep habits are perfect and if you are getting deep sleep for 4-5 hours, it is okay to wake up around 3-4AM (brahma muhurat). It is actually considered an ideal time to wake up, do morning routine, practice meditation, go for a light stroll around 5AM. If you feel sleepy in the afternoon, it's okay to take a nap for 1-2 hrs.

Ans: Hello Ashok,
Please once get all your blood tests done. At times when Vit D3 or Vit B12 is low sleep does get affected.
Also if there is some anxiety or emotionally something is bothering you then sleep can get affected.
I would advise you to get into a good night routine. You should take a warm water bath with some rock salt in it or you can dip your legs for 15 minutes in a bucket of water with some salt in it. You can do journaling like just pen down your thoughts in a diary. You can also do some anulom vilom or only left nostril breathing. This promotes deeper sleep. Yoga nidra can also help. Walking for 20 minutes can also help. Aromatherapy can help. All these videos you can find on YouTube.
Doing a good night routine before sleeping helps at a physical, mental and emotional level and definitely helps in deeper sleep.
All the best!