Yes I do still go to school and am about to start university I understand the amount of care and time parrots require even though I gi to school when I'm back I spend 3 to 4 hours with him and my family check on
In which case, I really, really recommend not adding to your flock. At the moment your life seems pretty settled, but I promise you that it will change dramatically when you enter university and the workplace.
I'm a university lecturer in London and understand how universities operate and what my students' lives look like. I'm pretty confident in saying that very few of my 18-22 year old students have the time to devote to a bird with complex needs.
At university, you will be timetabled for a certain number of contact hours which will depend on the subject you take. Contact hours are the hours you're actually timetabled for - these may include lectures, seminars and lab hours depending on your subject. However, you will be expected to do a lot of independent study: reading, taking notes, meeting your lecturers to discuss your work, preparing for assessments, perhaps forming a study group and so on. Around deadline time, some students practically live in the library. You may be offered the chance to study abroad and, depending on your course, you may do fieldwork away from the university. I know people who have spent time in Ghana, New Zealand, Tanzania, Germany, France and Japan has part of their degree.
Nearly all halls of residence do not allow pets. UK laws are a lot stricter about "emotional support animals" than the US and only recognise Guide dogs, Hearing dogs and other highly trained assistance dogs. You may choose to live off-campus but finding a pet-friendly landlord can be very difficult, especially if you're a student. You may live with housemates, and I can guarantee your average university student is not going to be 100% reliable about keeping doors and windows closed, only using safe cookware, not using common household cleaners, not using candles, air fresheners or incense, and not being very careful about fumes from perfume, deodorant, cosmetics and similar.
Universities also offer a lot of extracurricular activities. Mine offers everything from sports to tending the on-site vegetable garden. Typically, a university will offer sports teams, clubs for different hobbies and interests, and groups learning new skills or with common interests. You are (hopefully!) going to make friends and will want to socialise with them in the evenings. You may want to take inpromptu trips and weekends away. Sometimes these may be for fun and to relax, which is very important. Sometimes a skill you learn at university will lead to a career - for example, I know someone whose involvement in student radio led to a career as a radio presenter.
Money is often pretty tight. I don't know anything about your family's financial situation so cannot comment on how much of a maintenance loan you'll be able to get; however, many students find that it doesn't completely cover the cost of accommodation, bills, transport and food, let alone any extras. This is going to be more challenging for you because you may have to cover the cost of your IRN's food, toys and vet care. A lot of my students work part-time and often find it very challenging to balance their studies with work. A lot of them work in the evenings (generally in restaurants or bars) or at weekends (generally in retail). So, most students are already balancing their studies, social lives and part-time work. It is tricky to find the right balance between these things at the best of times. Sometimes my students get the balance wrong and find that paid work cuts into their studying time which means that they do less well than they could have done in assessments. Adding a parrot with complex needs is already going to be tricky; having two will be very, very difficult.
I have no idea what you want to do afterwards but your chosen career may involve long hours, unpredictable shifts, further training and/or travel. Again, these may be difficult to do with a couple of parrots in tow, especially if they do not like change.
You already have one bird that requires a good two to three hours out of their cage a day. If you add another bird, you have to prepare for them not to get on and to have separate out-of-cage time. The difference in beak sizes and general size may mean that it's never going to be safe to have both out at the same time. This takes you up to four to six hours spent with your birds a day, which you are simply not going to be able to manage as a student. Rather than add to your flock now, I would suggest waiting unti you are much more settled, in stable employment and with a reliable income. I think you also need to think about the care of your current IRN while you're at university. Are your family going to be able to care for them?