There's nothing that you can do about your height. Growth hormone works varied & on it's own. It has nothing to do with relatives or anything else either. But still you can follow some factors to make sure you are trying & be hopeful that might helps you through your growing process.
1.Make sure enough protein, vitamin & calcium getting into your body. Just a good nutrition is crucial.
2.Get plenty of sleep. The ideal would be 8-10 hours.
3.Get plenty of water daily. Never let your body gets dehydrated.
4.Do stretches each morning right after you wake up & also during the day.
5.Follow & get valid yoga movements. Which that might help for growing as well.
6.Do pull ups.
7.Also products such as turnips, collard green, green beans & broccoli known as products that might impress the growth hormone.
-All i said above, they are not 100 % helpful. They are only a "hope" of doing something. Controlling our lifestyle & doing something is better than doing nothing. Plus, there has been several examples that those factors & some other as well, helped some people in some way.
-Tip: Hopefully you didn't lift heavy weight in your growing age, doing heavy weights on workout in growing age will stunt your growing process.
-Tip: All the human hormones will continue growing till the age of "25" that's where everything in a human will finish developing. Now usually people will finish growing on 18-20. But sometimes growing hormones will not finish in 17-18-20 age but it will continue along other hormones till 25.
-Tip: Mostly hormones grow very varied. You grow some height , you stop, then you will grow beard while most of people in your age has no beard, but you are shorter than most of the males in your age. Then you have beard but your voice is not developed fully but others have manly voices & taller but no beard! Then suddenly they stop growing but you just start growing suddenly & get taller than all of them! . . What i mean is the hormones get developed without any specific routine. So you have to check to have a healthy lifestyle & be patient with yourself.
Example: I know someone being 6.0 while he's been below 20. When he reached his 20, he grown height & reached 6.4 then in age of 24 turned 6.5.