DS is 19 weeks old. He used to be a lovely sleeper - 7 til 2 or 3, sometimes up again at 5ish, sometimes straight through til about 730. Nights were always better the more sleep he'd had in the day - the night he slept 7-5 followed a solid 6 hours in the daytime...
About a month ago, he learned to roll, started teething, and went through a truly grisly sleep period - virtually no naps, multiple night wakings (once every 45-90 minutes). Things have now definitely improved, and we're back to mostly two night wakings which is ok for the time being. BUT the first one is inevitably much earlier than it used to be - 1 very occasionally, often 10 or 11 - and he's also taken to waking up about 6ish, not hungry or upset but very much awake.
Is there anything I can do about this, or is it just one of those things? We do have a routine, although naps have always been difficult but I usually manage to squeeze at least 3 hours daytime sleep into him.