Possibly pregnant with #4, give me All your tips/tricks/advice kn how to navigate life with everyone

Hey y’all, my hubby and I have pretty much decided God-willing 1 more LO and then we’re done for good. We’ve been “loosely” trying, so not preventing but not exactly trying I guess. My youngest is 10 months and I haven’t had a period yet since having her (I’ve been breastfeeding). So I know for a fact I just ovulated 5 days ago for the first time since giving birth. I had the telltale bloating, discomfort and discharge that comes with my ovulations, so to confirm it I took a fertility predictor and it was spot on. Today i had some light pinkish blood come out. Not much besides that. It’s too early for my period, but according to Google it’s a good time for implantation bleeding… so I think it’s possible I may be pregnant already. I also have a history of recurrent miscarriage, so I know it may or may not pan out. But I figure this is a great time to ask all you veteran moms for all of your tips and tricks for keeping your lives from spinning out in to utter chaos! :) I have an 8 (almost 9) year old, 6yo, and 10mo. Anything is helpful. Thanks all.