Nope.

Leaving your puppy alone at night or during sleeping time could be dangerous. Puppies may feel lonely and in need of company. And small puppies cannot bear the low temperatures so keep it safe

He got heat pimples in his stomach so i thought it would be better for him to sleep there

Try keeping him away from water, wet coat can lead to pimples and red rashes and other skin allergies. Keep him in cooler or AC.

Did you take him to vent

Nope pimple are okay from 2 yo 3 days and its time for his vaccination also

My dog will be of 3 month this 9 can i give anti rabies on that particular day or ill have to wait 3 4 days or more

But anitrabies vaccination was given at the age of 12 week

Yes its 3 month or 84 days

First rabies vaccine is given at 3 months of age. U should take him for rabies vaccine and deworming to a doctor. The vet will inform you about other vaccine schedule too.