The phrase "to make the deadline" means completing a task or project before the assigned due date or time.
Sentences with «to make the deadline»
But I didn't make the deadline for their open submissions. (worderella.com)
You can't put a clock on any child or make a deadline for them to be through with potty training. (thespruce.com)
If your client load is large and you are barely making the deadlines, consider taking on a part - time employee or some other help before marketing yourself further. (mb-guide.org)