This the third batch with this lovely kit (Citra hops ) First time I’ve used Carbonation drops . Have realised I may not have put enough and didn’t use the advice which was 2 lumps to a 500ml bottle and I gave only put in one. The lumps have been in with the beer 2wks now , at 20/21c . Although after cooling down and has a little fiz it doesn’t last in the glass . Can I opened and shut the bottles and put in another lump. Which might clear better as well! What does anyone think please?