You should still continue taking your medication and seeing your doctor regularly while you make these healthy changes. If your pressure and sugar normalise your doctor will be able to take you off your medications gradually.
Please, please, please, please! Don't stop taking your medications because you have decided to turn over a new leaf and get healthy. Your pressure or sugar may get dangerously high without your medications, and you may not realise it.
If your blood pressure or sugar is normal while you are taking your medications, that means the meds are working for you. You still need them. If you stop taking your meds your sugar or pressure will go up. It's only when your values start getting on the low side that your doctor will be able to reduce your medication.
Please make any dose changes of your medications in conjunction with your doctor. Nobody likes taking medication, but sometimes not taking them is much more dangerous.