when is the best time to pair?

I've been pairing my lesser and pinstripe with my females for 3 times now. starting from October 1st. i've done the 3 days on, 4 days of routine. i've never seen a lock from either of my males. they always look like they're snuggling though. is there a optimal time to put the snakes together? Any advice would be greatly appreciated. Thanks!

You can pair them anytime really. If both animals are in good health and weight you can pair anytime. Just continue 3 days on and 3-4 days off like you are doing. I always offer food to both male and female after putting them back into their tub.
Good luck!