High level play on LAN?

So, I've been playing league now for a month and I'm interested in learning to play on high competitive level. Now the issue is that I've been playing on NA server while being in PR and I used to get 85-90 ping, which really wasn't affecting me, but suddenly now I get 17-200 during most of the day and if I'm lucky ill get 90-120 from 8am to 1pm and at around 10pm so. Most of the day I can't really practice as much as I'd like to and I don't know if it's worth it to try to climb solo queue with such horrendous ping. I know Quas did it, but I don't know if I have the right mindset to take on such task. I get 40-60 on LAN btw.