Green card holder applying for the UK visitor visa [closed]

I am a full time student in college and I also have a full time job that I have worked for 2 years. I want to visit Jersey The Channel island because my boyfriend lives there. Due to Covid- 19, my school is fully online. Therefore, I can be anywhere in the world as long as there is an internet connection. I have also been planning to quit my job when school starts because it is too difficult to balance full time school and work. But decides to stick for a while until I leave to travel.

I want to apply for the UK visa visitor, and stay in Jersey in my boyfriend’s house for a month. He also lives with his mother. I understand I will be required to quarantine for the first two weeks. I will be able to financially support myself. What are the documents that my boyfriend will need to provide? Will his mom too?. Does he need to show his bank statements and pay slips?

I am planning to quit my job when I travel, so I wont be able to provide them leave of absence letter. Is being a college student enough to convince them that I will not overstay? Should I ask my professors for “leave of absence”?

I applied for US citizenship back in February. Due to Covid, it has been delayed and the website says that I will have to attend the interview and oath ceremony in November. Will that be a good reason to return to the USA and not overstay in the UK?

I have $3000 in savings, is that enough fund for one month?