Actually, that's not what I told you. But your added LED plus resistor will be ok; so will the 500k pot.I have replace led in place of relay... as per you told.
See the LED attached to R2? If the time period T is, for example, 2 hrs it will flash at 137/2 = 68 flashes per minute. And the LED attached to R1 will flash at that rate divided by 16, in other words 68/16 = ~4 flashes per minute. If you've changed C3 as discussed, for test purposes, your timed period T will be much shorter than 2 hrs. So if e.g. T = 6 minutes (0.1 hrs) the R2 LED will flash at 137/0.1 = 1370 per minute = 23 per sec and the R1 LED will flash at 1370/16 = 86 per minute.As an indication that the timer is working, the R2 LED, driven by pin 9 of the CD4060, flashes at a rate ~ 137/T, where the rate is flashes per minute and T is the period in hours. [The R1 LED flashes at 1/16 that rate].