At 3MO, wake time is not more than 1h15m-1h30m (before bedtime). You can work out a 3.5h feeding schedule like this and adjust bedtime according to when your LO will be home.
0700: Wake and Feed
0815: Nap 1
1030: Wake and Feed
1145: Nap 2
1400: Wake and Feed
1515: Nap 3
1730: Wake and Feed
1800: Prepare for bedtime ; asleep by
1900
2100: Wake and offer night feed
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