I remember a thoughtful tip. Increase your range by a 1/2 step a month (doesn't sound like much, does it?) and you gain an octave in a year. You have March (what is left). April and May. You may have to progress a little faster, but figure a half-step every 2 or 3 weeks. Eb to F is an important step. So is F to Gb and Gb to G.
Seems manageable that way
M&C