How far ahead should I start?
Two months is comfortable, six months is ideal. The long pole is the travel clinic: three months out and every course of jabs fits without anyone having to rush. Everything after that is a few hours of work in total. Insurance, the card, the eSIM and your apps are all jobs for the last few weeks.
I fly in three weeks. Am I too late?
No, but ring a travel clinic tomorrow. A tetanus booster, your first hepatitis A dose and the accelerated rabies course all still work from here, so jabs almost always have a point. Then check whether your countries do visa on arrival, and use the virtual version of your bank card: that works immediately, even while the plastic one is still in the post.
Do I really have to do all of this?
Your visa, your passport and, in four countries, your onward ticket are not optional: without them you do not get in. Insurance is optional on paper, but outside your own healthcare system you pay medical bills up front, and that is the bill that can end a trip. Jabs, a card, an eSIM and apps are choices, and on each page we say plainly who they do nothing for.
My route is not fixed yet. Can I start?
Yes. Work out roughly which countries you want and ring the travel clinic anyway, because they work by country and not by your exact itinerary. Checking your passport you can do today. Save the visas and the eSIM until the route is real.
What does all of this cost together?
Too variable to put one number on: it depends on your countries, how long you are going for and how old you are. Insurance you price up on its own page, the visa page lists the fee per country, and the jabs you settle with whichever clinic you go to. The apps are free, and so is checking your passport.
Can I sort some of it once I am out there?
An eSIM, a visa for the next country and most of the apps: yes, and we do that ourselves. Insurance you can still start abroad, although the add ons have to be chosen at the moment you buy. Jabs on the road cost you travel days. So the rule is simple: anything with a waiting time in it you do at home, and the rest can find you on the way.