Fuzzi’s sizing question

Hey - yes, I know I should just take his leg and waist measurement, but I thought it would be easier to ask you ladies

Jake is just out of his small FBs - they are a little too short for him now (if you know what I mean, low riders hehe) and the largest leg snap is getting too tight, but he still has them on the smallest or second smallest waist snap. So my question is - what size do you think would be the next best size? I have a couple of meds that he fits but I think his legs will be out of them quite quickly, so should I go to Petites? Or large? Or get more meds and hope he stays in them for a while longer? He seems to have a small waist and big legs!
I've got quite a few baby harmony meds which are a great fit, but I think I'll have the same issue with his legs outgrowing them well before his waist too.

Any ideas?

PS - sm peapods still fit well but I don't like them so much and Bum Genius weren't a great fit --- gave them to my sister who's bub has a big waist and small legs!

The gremlins were getting way chubby in the thighs for their meds, then had a huge growth spurt length wise and started moving and now they are back to being on the tightest snaps again. I'm pretty sure they will TT straight out of meds in a few months and never need larges at all.

Thanks guys, sounds like the meds I have should last him a while. Hes certainly on the move (a man on a mission!) but his legs don't seem to have got much thinner, although the rest of him has. I have a couple of baby harmony larges so I'll try them if his thighs get too fat for meds.
Thanks!

I tried his meds on again last week --- they are way smaller than his baby harmony meds, so he will be in them for ages .... probably should have tried them on again before asking eh?!