No more naps? Bedtime issues....

Any of your little ones no longer having day naps? Jackson is 22 months and i feel hes too young to drop his last nap buuuuut all pf a sudden getting him to sleep at night has become impossible. Hes always gone to bed at 7pm but now its taking him 1.5 hours to fall asleep. He will climb out of bed and turn the light on and play with his toys. Ill put him back in bed and so on until i end up laying with him and it still takes him ages to fall asleep. Im eondering if i need to cut the day nqp...