Ive yet to read anything official stating otherwise, though if there is something that officially states that premature resurrections don't interfere with his 100 year slumber, then I will be inclined to agree. So until then I'm going to file that under "fan speculation."
All you have to do is look at the timeline.
Dracula was killed in 1476. He was also killed in 1479, yet he woke up in 1576. Dracula survived his first encounter with Christopher and was killed in 1591. He woke up in 1691. He was brought back with the remains in 1698 and 1748 and killed each time (and no, I'm not going into wishy washy arguments over whether or not that was
Real Dracula), yet he woke up in 1792. Dracula was brought back in the early to mid 1800s in Order of Ecclesia, yet he woke up in 1897. He was brought back in 1917 and 1944, yet he wakes up in 1999.
Now, the
only thing (and it's pretty minute) that lends some credence to the premature resurrections interfering with his regular 100 year slumber is Symphony of the Night and Bram Stoker's Dracula. Symphony of the Night = 1797, Stoker's novel = 1897. However, Rondo = 1792, so the difference isn't great enough to be convincing considering everything else I just mentioned, at least not to me.