Is there a limit to how many project tokens you can get

I have 1000 tokens and really want the prestige Irelia skin but I am only half way there and have run out of missions. Is there going to be a refresh/ new missions? Or do you have to buy the orbs to get the prestige points/skin. if so rito is greedy :( Edit: i have now played 3 ranked games after getting 1000 points and have not got anymore. so im not getting them from playing (and yes i have the pass) Edit 2: my client bug-splatted and now its got the points :)
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