If you are healthy then your hair will grow normal.
1) So take care of your general well being
2) wash hair with good shampoo at least twice a week.
3) Put oil (olive oil, almond oil, amla oil or mustard oil).
Make a mixture of that entire in equal amount. Massage them deeply & let it be for a day & night. Then wash.
4) You need plenty of water to drink, eat fruit, & protein as well.
Inshallah you will achieve your goal.