Timebased issue

[AnkitExcelerate]

We have checks for start date and end date that it should not exceed 3 months and in timebased if i select todays date, end date should be set to todays date only.
Now, if i clicked on todays date in start date, end date is setting to 3 months apart which should not be the case in timebased.

Expected behavior - If i select start date as todays date, end date should be the same

Issue 2 -
Due to the timeframe, Now if i select start date as 8 months back also my end date is not changing and i am getting data for all 8 months, when we should have a backend check for this.

Expected behavior - There should be a check on frontend and backend that we should not be able to fetch data for more than 3 months

Screenshots -

Issue 2 -