Been skating for years and i used to be able to ollie 4 decks but now the board wont come up to my back foot?

Ive been skating for 2 years now and i used to ollie four decks and i took a week long break and now when i pop and jump, the board doesnt seem to want to rise up to my back foot or kind of stick to my feet like it used to, this is so annoying, how can i make the tail rise up to my back foot quicker