change of status b2 to f1 denied SEVIS dates- h e l p

[Vishal2019]

In I-539 to bridge the gap while waiting for the COS approval, at part 3, I/We request that my/our current status be extended until (mm/dd/yyyy). What date should I enter? How can I provide the reference for the already filed I-539 for change of status from B2 to F1? And how do I know that when I have to file the I-539 again for the bridge gap and how many times?
I mean every 6 months or each time my SEVIS start date differs?
Thanks in advance.

[kiki2000]

In I-539 to bridge the gap while waiting for the COS approval, at part 3, I/We request that my/our current status be extended until (mm/dd/yyyy). What date should I enter? How can I provide the reference for the already filed I-539 for change of status from B2 to F1? And how do I know that when I have to file the I-539 again for the bridge gap and how many times?
I mean every 6 months or each time my SEVIS start date differs?
Thanks in advance.

Based on my experience, try to add 6 months to your i-94 expiration date. Dates should be /"i-94 expiration date" to /180 days after Expiration. For example, if your i-94 expires 05/03. You should put 05/03/xx to 11/04/xx