You need to proceed slowly and make changes, then wait for a couple days and see how it goes. Most doctors can only approximate a starting dose and then there is a process of "tweaking" that most of us learn to do on our own in a methodical trial and error.
When are you seeing highs? If you go up a lot after you eat, and your blood sugar two hours after eating is significantly spiked, then your I:C ratio is too generous. Most of us need more insulin in the morning. My own I:C ratios, for example, are 1:5, 1:10 and 1:21. If I tried to bolus 1:21 for breakfast, I'd be way high!
But before you work on I:C ratios you need to see that your lantus is covering you for the "in between times" - waking, bedtime, and several hours after food (or before the next meal). It's not useful to "just bolus more than necessary" if your basal isn't adequate. For example if you are 150 before your meal, where can you go but up? I would try going to 5 units of Lantus and seeing how you do for 2-3 days.
For the bolus, again, slow and cautious! If you are consistently too high using 1:30, try 1:25 and see how you do for awhile. Again, you may find you need more insulin for breakfast.
I just reread your post and see you said "with lunch and dinner". What about breakfast? You need to bolus whenever you eat according to the carbs you are having. If I didn't bolus for breakfast I would spend the entire day chasing highs. Your lantus that you take in the morning is your long-acting or background insulin. It does nothing for breakfast coverage.
I highly recommend the book Using Insulin by John Walsh.