Tips for 2 under 3 kids gg out with 1 parent only

Hi as the title says it. Any survival tips for mumies with 2 under 3 y/o? In general and also when gg out with me being the only parent. My first is 2 years 3 months and 2nd is 1 month old. Begore I gave birth to my 2nd baby, I always bring my 1st daughter out swimming/etc just gor fresh air cos being home too ling can be stressful for both of us esp my hyperactive toddler. But Im nervous bringing 2 kids out especially since my 2nd baby is exclusive breastfed by latch. My first baby I exclusive pump for 6 months and soon swap to formula after that. Any mumies advice would be appreciated. Keep in mind my girst chikd is a extra hyperactive outdoorsy kid who has also started her terrible twos😅