Am I doing this correctly? Doing 12 to 14 strand D97 for my recurve, flemish twist. Once I finish with the string, I string it to my bow. Rub the string to get it hot (also getting any gunk material out of the string), then strun it again to the correct brace height, leave it on the bow for a day, check brace height which usually increase due to string creeping/stretching, give it another rubbing, then correct it to the correct brace height again, I do this until it stops moving which can take up to two days depending on my schedule, chores, work...

my question, is this how D97 is suppose to behave?

You are on the right path.  My only concern is your use of the word "hot".  Once the string is built to length, wax it by using a small leather patch to rub it in.  The friction / heat built up as you rub in the wax with the leather patch allows the wax to penetrate deep into the string.

You can leave the string on the bow or suspend a weight on the end of the string for a day or two to pre-stretch it.

After the initial stretch, put the string on the bow, adjust to your preferred brace, put on a string nock and start shooting the bow.  After about 100 shots or so, the string may stretch a little bit yet and you may need to adjust your brace height accordingly. Just check your brace height before each shooting session (a reference line on your target arrows works well for this) and adjust as needed.

Thank you for your comment, question, what is the purpose of waxing D97, I tried it before and after a few shots, the wax is all over my limbs, my understanding is wax is used to keep dirt out of the string but is it necessary with D97.. sorry for the question, I am still very green in Archery.

Actually, I found the answer on another thread:
Wax: The whole purpose is to lubricate and protect the fibers from the elements and the friction of themselves!

>>suspend a weight on the end of the string for a day or two to pre-stretch it.<<

+1, a 75# dumbbell over night does the trick

To remove excess wax from your newly waxed bowstring use a piece of string or serving material and using both hands run it up and down the string a couple of times.