Sounds like a good plan.

The pressure is from the breather being blocked. If it is gunked up, it may not open up when the engine warms. If it is partly frozen, then engine heat can warm it up, but not always. And an oil leak that has been started by a seal blowing out won't necessarily stop when the pressure is removed. Only way to tell is to watch it and see if it continues.

It isn't always possible to avoid short trips during cold months. If not, what is important is an occasional drive for a longer distance, to get it good and hot and give it enough time to boil off the condensation that collects. If that isn't possible, then the fall back is regular (annual) maintenance of the crankcase ventilation system, and cleaning out any condensate (the white paste that is formed with condensation and oil)that collects. It has probably taken several years for enough to collect to cause a problem for you now, so with the same driving behavious, an annual check should be fine.

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2007 X3 3.0si, 6 MT, Premium, White

Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue