You could open the file in a text editor and in the SCHEDULE line at the top change the 'start_month="10"' to 'start_month="4"'.
Attached is another option made from adjusting the league configuration parameters of
this file:
#
# 10 team schedule, 162 games
# Designed for the following configuration:
# 1 subleague with 2 divisions, each with 5 teams
#
#
# 33 games against 4 other teams in division (15-18H/15-18A)
# 6 games against 5 teams in other division (3H/3A)
#
#
# At all times one teams from each subleague involved in interdivision series
# except first half of first week of season
#
# No team plays more than 20 consecutive days without offday
#
# No homestands or roadtrips longer than 14 games
#
# All game times set at 7:05pm
#
# Season begins first Monday on or after April 1
# Season ends late September/early October
#
# All-Star Game set for first Tuesday on or after July 9th
#