skip it!
skipping it does not mean you don't learn, you can still learn guided by your teacher, taking each grade is not necessary (usually anyway), so unless you have a personal desire to have each award on your wall then it doesn't matter

Everyone has different goals/reasons etc, myself I said to myself I'd get the certificate for grade 1, 5 and 8, no reason whatsoever, it's just 'what I fancy'

done grade 1 with distinction, I keep 'chickening out of grade 5' but will do it 'eventually' LOL