I would suggest that your acting time for your bolus needs to be extended... what is your meter set at 4 hours? You may need to tweak this to 5 or 51/2 hiurs.
Basal testing can still be done and should be done uf you have to have correction for DP in mirnings as well.. you want to know that correction is bringing you back to target level at 5 hours from taking it.... so any correction should also be rested to make sure it is right...
I too found tresiba gave me soikes late at night and others dont...
I have also pumped and cannot go back to a pump as my skin blocks the cannulas. I've settled with 3 jabs of insulatard a day but like you also find I can have a few good days/nights and then things go pear shaped.
However, my levels do change around whether my hubby is on his one day of earlies each week, stress (and I have other illnesses to add in to my stress-which have a greater impact and also exercise can throw me enormously.. even if I change from one dog walk a day to two or none as my hubby takes her on both.. or even dog training... but even with identifying those things I still get random blips.. yet I especially eat the vast majority of my my main meals being the same veg, and same food and very, very rarely eating during the day...
Are you exercising on any of these days, or having a day off or weekend off?