You could, of course, pull to the 30sec and 2min OEI for those durations and then immediately back off to max con and then re-apply the 30sec and 2min once more - continuing with this cycle ad infinitum!
"Ad infinitum" isn't possible for all turbine engines, it depends on what the manufacturer says. Some are certificated only for a defined cumulative time, after which the engine needs an overhaul.