You are smart.
Increases in sweating are definitely signs of a change in health and are recommended to be mentioned to your primary care physician.
And you've related it to your growth spurt, also smart !
Many people either don;t know or forget that they can call their doctor's office or email with information to be put on file for when they have their next appointment and that the doctor doesn't have to see you for you to submit a urine sample, if the doctor thinks that's a good idea.
Increases in sweating is usually indicative of hormone imbalance, especially in the areas regulated by the pineal gland. This can be that something else is out of balance and then a chain reaction occurs.
*here's a link for you, check out the table of topics on the right of the page
1) Add even just one glass of water every morning, first thing when you wake up. There's a very important body regulating hormone or gland or node or something that H20 first thing in the morning specifically helps but I forget it's name.
Lemon water is even better.
Here's a link why link
2) No caffeine ! Even if it's just one cup a day or after a certain time of day. Caffeine really effects how much we sweat, we have turned into such a coffee and soda culture int he West, especially, that people,however obvious this seems or smart we are ,seem to have forgotten this.
3) This will sound weird but, it's a really good tip I picked up from my dada.
He used to run marathons and he got in the habit of using those odd socks from the laundry in his butt crack to prevent chafing.
It needs to be cotton, not cheap artificial fibers.
You could even buy a bag of specially colored cotton socks just for this purpose. I have them in my gym bag. :3
You just tuck the thin foot part in and fold the top half over and hold it there with your underpants' waistband. It absorbs the moisture like a sweatband on your head and wrists does. He actually tucked is further down in between his testicle pouch...TMI
Some people suggest powders but, this actually throws off your body's natural Ph even more causing more odor and of course 'paste' *eeewwww*
The things we think of as unwanted and gross are just hard-wired into our body's mechanism to remind our conscious selves to regulate our living habits to what the body needs. It's a amazing how connected it all is. Drinking the recommended 'half your body weight in ounces every day" ( ex. 140 pounds = 70 ounces of water a day = Nine 8 oz.glasses ) will not only help your sweat not smell but will remarkably cut down on the sweating.
Also : start switching to only natural fiber clothing like cotton.Do an image search to find where to buy 'mens' cotton mesh undergarments' for dryness.