Sanita sizing

I purchased a size 44 in Sanita professional. My big toe may touch the top at various times. My heel is moving freely as well as the arches being in the correct spot. I know that after the breaking in phase the leather tends to expand some. My question is should I keep the 44 knowing the soon to come changes or should I get a 45 (which is looser from the beginning)?

Sanita clogs are comfortable but I want to spend my money on the size I can wear or return before the exchange date passes.

Thanks for all responses in advance