My 16 year old forgot his,lantus on Friday morning but didn't actually remember until 7pm, as it was boxing day I decided to wait u til the next dose on Sat morning and monitor. He has taken all doses since. My question is should he still be running high nearly three days later I know it takes a few days for a change in dose to take effect is this the same for a missed dose. He is normally very good and well controlled. Today he sailed all morning and is normally battling lows after exercise but had a pre lunch reading of 16. Any advice gratefully received