I think you might misunderstand selfseflsefl... :)
Actually my oral English has been improved a lot since I graduated and started working in a 100% pure English work place, where clear and professional English communication is A "MUST". After non-stop talking in English for 8 hours or sometime even 12 hours straight per day while at work, my tongue has already been flexible enough to do "liaison"(连读) very easily.
Because we want to learn native English, so the best we can do is to get chance practicing English with native speakers. And that is the key point of selfselfself's advice.
Good luck to you and have a nice weekend!