I have been taking 6mg of melatonin at bedtime for two months and am finding that I'm waking up 3 or 4 nights out of the week in the middle of the night and have a difficult time falling back to sleep. I usually take it around 10PM give or take a few minutes and have no trouble getting to sleep. I am taking the regular tablets, not the extended release. Is it worth looking into the extended release or can I take 1 3mg tablet at bedtime and the other when I wake up at 3AM? I'm usually up and out of bed around 6:15 each morning and do not want to be groggy. I appreciate any suggestions! Thanks