Happy to clarify here, that limit is actually not based on usage and is tied to the plan level, so the free tier has a hard timeout limit of 1 hour, we have some details here:
There are some options outlined in the above article for working around this limit, but a plan upgrade will also allow access to longer build timeouts. Specifically free is 1 hour, Performance plan will be 3 hours, and Scale will be 5 hours: