Growing hair it may be painful.
Here is top ways to grow it fast and healthy.

1)Don’t shampoo it regularly:

i know you’ve hear this one very often, but it’s true. Shampooing your hair may cause damage to your hair and dry you scalp which can make it fall.

2)Drink water:-

Water is amazing “water can save all our problems”
If you want to lose weight just drink water
Water help our blood cells to produce more blood which good for the hair.

3)Massage your scalp with coconut oil before you go to sleep:

I think you may know this “A scalp massage relaxes your mind and nervous system, promotes sound sleep and may help your memory too.”

Pour some oil into a bowl and warm the oil by placing the bowl in some hot water. The oil should be warm but comfortable to the touch, alternatively warm a little oil by rubbing your hands together Using the pads of your fingers, work the oil into your scalp using circular motions. Slow, deliberate movements are relaxing whereas vigorous movement helps enhance energy and circulation
Apply the oil little by little to different parts of your scalp, parting your hair as needed and then relax, let the oil do it’s work.

4)Give it some time:

I know you are excited to see the result but you have to let it take time and it will grow fast and healthy be patient.

I hope it helps.