How to exchange my first job and second job.

I'm working at two places. My first job is FTE 0.2 and the annual income is around 8,000 GBP. The Second job is FTE 0.6 and the annual income is less than 28,000 GBP. I pay tax around 20%. I think it is higher than normal rate. 1. Where can I get the advice? 2. How can I check my first job and second job? 3. How can I exchange first job and second job? Please let me know. I think thisCan I change my seond job to

Hi,

You will need to contact our Income Tax team if you wish to discuss how your Personal Allowance is allocated between the two jobs.

Income Tax: general enquiries

Thank you.