It sounds like you have connected strongly with the style of preaching and worship at hillsong.
Is it an option for you to go to hillsong's sunday services during term time and do catholic mass & confession when you feel like it on weekdays?
During the holidays when you are with your parents they might take it the wrong way if you stopped going to their usual church.
My mother got quite tearful when she realized I only go to mass and confession a handful of times a year.
I've been to see lots of different church denominations over the last five years.
I'm lazy catholic and prefer to go to catholic church for Christmas eve midnight mass.
I tend to go to anglican church for easter.
I've visited anglican, baptist, plymouth brethren, christian scientist, liberal CofE, greek orthodox, pentacostal, methodist and unitarian churches.
I steer clear of churches linked with the fundamentalist Free Presbyterian Church of Ulster, opus dei and all brethren sects using the word "exclusive".
I'm not keen on the style of worship at hillsong or the way that they solicit financial contributions from worshipers.
Pentacostal churches are great for learning about the old testament but a bit too enthusiastic about loud worship, dance and tithes by direct debit.
Christian science churches are very deeply immersed in anti-vaxxer doctrines and aggressively preaching against the medical profession/healthcare system.
Greek orthodox churches tend to be theologically hardline, the sermons tend to be quite long, new faces are noticed immediately by friendly members of the congregation who are all very welcoming.
Unitarian churches have very different beliefs about the trinity in comparison with many other churches and unusual interpretations of many bible stories.