So 46 days of gap between job 1 and job 2? Don't get cobra, just tough it out. If medical bills are >= 3k, then go ahead and sign up for cobra and get a chunk covered.
If your employer was paying $3,000/mo for your insurance, it's going to be $3,060 for you.
Fuck whichever lobbyists made sure that was allowable.
Edit: corrected per the reply.
It's not mandatory and its capped at 2%, not 5%, but, yes, there is a potential additional charge beyond just the full cost (what would be the employer + employee share, for a current employee) of coverage.
Also, COBRA and medical insurance in general used to be a much smaller fraction of middle-class take home pay, so it was a lot more realistic to elect to pay it out of savings even if you weren't concerned about all the above.