I am confused and stressed about the salary component of the tier 2 Visa application. I have been granted a COS, with salary of £29452(incl. HCLA). I am a physio, and the job is band 6 NHS post. Working hours 37.5 p/w. The COS is for 3 years. I am 27 years old. I have not yet applied for my Visa as I await IELTS results.
1. Will the salary be adjusted and calculated to 39hours p/w as per normal standards?
2. Is there any circumstances that allow NHS physios to earn below the £30k threshold?
3. Can I ask my employer for a possible £548 bonus to make the total salary £30000? And will this require a new COS?
4. Does the fact that it is a 3-year COS help my situation in any way?
5. Should I be worried?

Please help. I am super stressed about this and getting mixed answers. Thank you!