1) Learn to be your son's best advocate. Just because the policy on a pump might be "6 months" or whatever doesn't mean you can't fight it and win. From what you described, the microdosing a pump can do (.025 unit) would make a huge difference in your son's management. He'll feel better, have lower risks, and more.
2) Switching Lantus to morning was a good move. We actually did the opposite as my daughter climbed during the night, but the endo initially recommended morning dosing until we learned what was happening.
3) When my daughter had to eat all day to be stable at night, we switched to the pump. It was revolutionary. She didn't feel well on MDI. For us, it was puberty hitting full blast overnight.
4) Most kids do become quite good at juice guzzling in their sleep.
5) Sleeping through alarms is scary, even several years in.
8/2010 - 9/2011 MDI, Lantus & Humalog
9/2011- Medtronic Revel 723 & CGM
11/2012 - Dexcom G4
2013 - Cut-The-Cord for water times after multiple Aquapac failures
10/2015 - T-slim
"Life is not waiting for the storms to pass, but learning to DANCE in the rain."